下面是一个仪表板小部件，您可以使用它来管理它们：

// add dashboard widget
add_action(\'wp_dashboard_setup\', \'wpse_dashboard_widget\');
function wpse_dashboard_widget() {
    // only show widget to users who can publish pages
    if(current_user_can(\'publish_pages\')) {
        wp_add_dashboard_widget(\'deduped_dash_widget\', \'Publications\', \'wpse_create_deduped_dash_widget\');
    }
}
// widget contents
function wpse_create_deduped_dash_widget() {
    // select publications without duplicates by using DISTINCT
    global $wpdb;
    $mentions = $wpdb->get_results("SELECT DISTINCT meta_value FROM wp_postmeta WHERE meta_key = \'press_mention_information_publication-name\'");
    // if any were found
    if($mentions) {
        // display them in an unordered list; could do <ol> if you want numbers
        echo \'<ul>\';
        foreach($mentions as $publication) {
            echo \'<li>\' . $publication->meta_value) . \'</li>\';
        }
        echo \'</ul>\';
    }
}

如果有自定义主题或自定义子主题，可以将其放置在functions.php. 否则，您可以创建一个插件，这可能比只为这个小部件创建子主题更容易。

或者，如果您有权访问phpMyAdmin，则可以运行查询

SELECT DISTINCT meta_value FROM wp_postmeta WHERE meta_key = \'press_mention_information_publication-name\'

并获得列表。