我有办法解决这个问题。通过使用“add\\u action”，我可以实现我的目标。

  add_action("load-edit.php", \'block_listing_page\');
  //-- Block user to access post listing page    
  function block_listing_page() {
        if ($_GET["post_type"] == "your_custom_post_type") {
            $args = array(\'post_type\' => \'your_custom_post_type\', \'post_status\' => \'publish\');
            $galleryPosts = get_posts($args);
            if (!empty($galleryPosts) && count($galleryPosts) > 0) {
                wp_redirect("post.php?post=" . $galleryPosts[0]->ID . "&action=edit");
            } else {
                wp_redirect("post-new.php?post_type=your_custom_post_type");
            }
        }
    }

    add_action("load-post-new.php", \'block_create_multiple_gallery\');
    //-- Check if a post is exist open in edit mode when clicking add new post
    function block_create_multiple_gallery() {
        if ($_GET["post_type"] == "your_custom_post_type") {
            $args = array(\'post_type\' => \'your_custom_post_type\', \'post_status\' => \'publish\');
            $galleryPosts = get_posts($args);
            if (!empty($galleryPosts) && count($galleryPosts) > 0) {
                wp_redirect("post.php?post=" . $galleryPosts[0]->ID . "&action=edit");
            } else {
                return true;
            }
        }
    }

您需要使用正确的钩子（这些钩子并不总是与URL/slug相同），并且使用稍后运行的钩子（例如admin\\u init）也没有坏处：

add_action( \'admin_init\', \'wpaws_136058_remove_menu_pages\' );

function wpaws_136058_remove_menu_pages() {



    /*You can check list of menu item by below code:
    foreach ($GLOBALS[\'menu\'] as $key => $value) {          
        print(\'<pre\');
        print_r($value);
        print(\'</pre>\');
    }
    */

    //Remove item from menu
    remove_menu_page(\'menu_to_remove\');

}