Using WordPress ‘dbx_post_advanced’ PHP action

The dbx_post_advanced WordPress PHP action fires in the middle of built-in meta box registration.


add_action('dbx_post_advanced', 'my_custom_function');
function my_custom_function($post) {
  // your custom code here


  • $post (WP_Post) – The WordPress post object.

More information

See WordPress Developer Resources: dbx_post_advanced


Adding a custom meta box

Add a custom meta box to the post editing screen.

add_action('dbx_post_advanced', 'add_my_meta_box');
function add_my_meta_box($post) {
  add_meta_box('my_meta_box', 'My Meta Box', 'display_my_meta_box', $post->post_type, 'normal', 'high');

function display_my_meta_box() {
  // Display the meta box content

Displaying post ID

Display the post ID in a custom meta box.

add_action('dbx_post_advanced', 'add_post_id_meta_box');
function add_post_id_meta_box($post) {
  add_meta_box('post_id_meta_box', 'Post ID', 'display_post_id', $post->post_type, 'side', 'default');

function display_post_id($post) {
  echo 'Post ID: ' . $post->ID;

Adding custom content based on post type

Add custom content to the post editing screen based on post type.

add_action('dbx_post_advanced', 'add_custom_content');
function add_custom_content($post) {
  if ($post->post_type == 'page') {
    echo 'You are editing a page!';
  } else {
    echo 'You are editing a ' . $post->post_type . '!';

Conditionally adding a meta box

Add a custom meta box only if the post is a draft.

add_action('dbx_post_advanced', 'add_draft_meta_box');
function add_draft_meta_box($post) {
  if ($post->post_status == 'draft') {
    add_meta_box('draft_meta_box', 'Draft Info', 'display_draft_info', $post->post_type, 'side', 'default');

function display_draft_info() {
  echo 'This post is a draft.';

Hiding a meta box based on user role

Hide a meta box for users who are not administrators.

add_action('dbx_post_advanced', 'hide_meta_box_for_non_admins');
function hide_meta_box_for_non_admins($post) {
  if (!current_user_can('manage_options')) {
    remove_meta_box('slugdiv', $post->post_type, 'normal');