To add an author filter on the list of articles page available in WordPress, simply add the following code to the functions.php file:
Note: I have left the comment on the conditional instruction concerning the post types, it might come in handy 😊
function restrict_manage_authors() { /*if (isset($_GET['post_type']) && post_type_exists($_GET['post_type']) && in_array(strtolower($_GET['post_type']), array('your_custom_post_types', 'here'))) { */wp_dropdown_users(array( 'show_option_all' => 'Show all Authors', 'show_option_none' => false, 'name' => 'author', 'selected' => !empty($_GET['author']) ? $_GET['author'] : 0, 'include_selected' => false )); /*}*/ } add_action('restrict_manage_posts', 'restrict_manage_authors');