Fires before meta boxes with 'side' context are output for the 'page' post type.
$postWP_Postwp-admin/edit-form-advanced.php:699file scope * The submitpage box is a meta box with 'side' context, so this hook fires just before it is output. * * @since 2.5.0 * * @param WP_Post $post Post object. */ do_action( 'submitpage_box', $post );} else { /** * Fires before meta boxes with 'side' context are output for all post types other than 'page'. * * The submitpost box is a meta box with 'side' context, so this hook fires just before it is output. *Introduced in 2.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.