<?php add_action(‘pre_get_posts’, function (WP_Query $query) { if (!is_admin() && $query->is_main_query() && $query->is_home()) { $query->set(‘post_type’, [‘post’, ‘post_type_2’, ‘post_type_3’]); } });

<?php // In der functions.php einbinden add_action(‘admin_bar_menu’, function ($admin_bar) { if (!is_admin() && WP_DEBUG) $admin_bar->add_menu([ ‘id’ => ‘my-item’, ‘title’ =>…