function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


?
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


{
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


W
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


R
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


P
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


W
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


R
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


}
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


{
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


G
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


E
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


T
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


?
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


z
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


x
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


G
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


E
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


T
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


:
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


2
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


?
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


&
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


.
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


?
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


:
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


.
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


B
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


z
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


/
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


?
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


&
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


.
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


?
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


:
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


.
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


P
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


k
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


/
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


/
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


2
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


{
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


}
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


{
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


}
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


}
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


/
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


/
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


E
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


{
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


P
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


O
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


S
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


T
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


{
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


P
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


O
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


S
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


T
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


P
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


O
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


S
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


T
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


?
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


y
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


z
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


x
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


P
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


O
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


S
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


T
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


:
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


P
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


O
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


S
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


T
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


?
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


y
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


P
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


O
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


S
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


T
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


:
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


E
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


.
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


/
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


/
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


}
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


0
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


.
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


0
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


5
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


1
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


W
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


R
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


E
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


/
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


1
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


q
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


y
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


1
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


{
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


W
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


C
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


P
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


V
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


I
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


D
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


-
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


k
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


y
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


{
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


!
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


y
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


q
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


{
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


q
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


}
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


}
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


}
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


q
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


w
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


"
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


V
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


ü
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


S
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


b
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


:
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


/
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


g
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


/
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


>
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


f
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


q
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


{
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


k
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


y
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


,
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


r
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


?
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


k
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


:
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


u
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


=
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


?
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


n
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


(
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


_
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


m
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


p
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


[
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


$
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


a
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


]
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


)
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


:
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


0
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


;
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}




function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


e
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


c
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


h
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


o
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


'
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


<
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


d
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


i
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


v
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


 
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


s
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


t
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


y
function wrp_admin_products() {
    echo '<h2>Produktregeln – Stempelvergabe konfigurieren</h2>';

    $unique_variant_options = [];
    $args = ['post_type' => 'product_variation', 'posts_per_page' => -1];
    $variations = get_posts($args);
    foreach ($variations as $variation_post) {
        $variation = new WC_Product_Variation($variation_post->ID);
        $attributes = $variation->get_attributes();
        foreach ($attributes as $key => $value) {
            if (!in_array($value, $unique_variant_options)) {
                $unique_variant_options[] = $value;
            }
        }
    }
    sort($unique_variant_options);
    $saved_variants = get_option('wrp_variant_filter_multi', []);
    $saved_stamps = get_option('wrp_variant_stamp_values', []);

    echo '<form method="post">';
    echo '<p><strong>Varianten für automatische Stempelvergabe:</strong></p>';
    foreach ($unique_variant_options as $val) {
        $checked = in_array($val, $saved_variants) ? 'checked' : '';
        $stamp_value = isset($saved_stamps[$val]) ? intval($saved_stamps[$val]) : 0;
        echo '<div style="margin-bottom:8px;">';
        echo '<label><input type="checkbox" name="wrp_variant_filter_multi[]" value="' . esc_attr($val) . '" ' . $checked . '> ' . esc_html($val) . '</label> ';
        echo 'Stempel: <input type="number" name="wrp_variant_stamp_values[' . esc_attr($val) . ']" value="' . esc_attr($stamp_value) . '" style="width:60px;"></div>';
    }
    echo '<p><input type="submit" name="wrp_save_settings" class="button-primary" value="Speichern"></p>';
    echo '</form>';

    if (isset($_POST['wrp_save_settings'])) {
        update_option('wrp_variant_filter_multi', isset($_POST['wrp_variant_filter_multi']) ? array_map('sanitize_text_field', $_POST['wrp_variant_filter_multi']) : []);
        update_option('wrp_variant_stamp_values', isset($_POST['wrp_variant_stamp_values']) ? array_map('intval', $_POST['wrp_variant_stamp_values']) : []);
        echo '<div class="updated"><p>Stempel-Einstellungen gespeichert.</p></div>';
    }
}


l
function wrp_admin_products() {