add_submenu_page ( string $parent_slug, string $page_title, string $menu_title, string $capability, string $menu_slug, callable $function = '' )

Add a submenu page.

This function takes a capability which will be used to determine whether or not a page is included in the menu.

The function which is hooked in to handle the output of the page must check that the user has the required capability as well.

Return: (false|string) The resulting page's hook_suffix, or false if the user does not have the capability required.

Source file: wp-admin/includes/plugin.php

View source


Parameters

$parent_slug

(string) (Required) The slug name for the parent menu (or the file name of a standard WordPress admin page).

$page_title

(string) (Required) The text to be displayed in the title tags of the page when the menu is selected.

$menu_title

(string) (Required) The text to be used for the menu.

$capability

(string) (Required) The capability required for this menu to be displayed to the user.

$menu_slug

(string) (Required) The slug name to refer to this menu by (should be unique for this menu).

$function

(callable) (Optional) The function to be called to output the content for this page.

Default value: ''


More Information

Notes

  • NOTE:If you’re running into the “You do not have sufficient permissions to access this page.” message in a wp_die() screen, then you’ve hooked too early. The hook you should use is admin_menu.
  • For $menu_slug please don’t use __FILE__ it makes for an ugly URL, and is a minor security nuisance.
  • Within the rendering function $function you may want to access parameters you used in add_submenu_page(), such as the $page_title. Typically, these will work:
  • This function should normally be hooked in with one of the the admin_menu actions depending on the menu where the sub menu is to appear:
    admin_menu The normal, or site, administration menu
    user_admin_menu The user administration menu
    network_admin_menu The network administration menu

Used by


Source

function add_submenu_page( $parent_slug, $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
	global $submenu, $menu, $_wp_real_parent_file, $_wp_submenu_nopriv,
		$_registered_pages, $_parent_pages;

	$menu_slug = plugin_basename( $menu_slug );
	$parent_slug = plugin_basename( $parent_slug);

	if ( isset( $_wp_real_parent_file[$parent_slug] ) )
		$parent_slug = $_wp_real_parent_file[$parent_slug];

	if ( !current_user_can( $capability ) ) {
		$_wp_submenu_nopriv[$parent_slug][$menu_slug] = true;
		return false;
	}

	/*
	 * If the parent doesn't already have a submenu, add a link to the parent
	 * as the first item in the submenu. If the submenu file is the same as the
	 * parent file someone is trying to link back to the parent manually. In
	 * this case, don't automatically add a link back to avoid duplication.
	 */
	if (!isset( $submenu[$parent_slug] ) && $menu_slug != $parent_slug ) {
		foreach ( (array)$menu as $parent_menu ) {
			if ( $parent_menu[2] == $parent_slug && current_user_can( $parent_menu[1] ) )
				$submenu[$parent_slug][] = array_slice( $parent_menu, 0, 4 );
		}
	}

	$submenu[$parent_slug][] = array ( $menu_title, $capability, $menu_slug, $page_title );

	$hookname = get_plugin_page_hookname( $menu_slug, $parent_slug);
	if (!empty ( $function ) && !empty ( $hookname ))
		add_action( $hookname, $function );

	$_registered_pages[$hookname] = true;

	/*
	 * Backward-compatibility for plugins using add_management page.
	 * See wp-admin/admin.php for redirect from edit.php to tools.php
	 */
	if ( 'tools.php' == $parent_slug )
		$_registered_pages[get_plugin_page_hookname( $menu_slug, 'edit.php')] = true;

	// No parent as top level.
	$_parent_pages[$menu_slug] = $parent_slug;

	return $hookname;
}


User Contributed Notes

  1. Example

    add_action('admin_menu', 'wpdocs_register_my_custom_submenu_page');
    
    function wpdocs_register_my_custom_submenu_page() {
    	add_submenu_page(
    		'tools.php',
    		'My Custom Submenu Page',
    		'My Custom Submenu Page',
    		'manage_options',
    		'my-custom-submenu-page',
    		'wpdocs_my_custom_submenu_page_callback' );
    }
    
    function wpdocs_my_custom_submenu_page_callback() {
    	echo '<div class="wrap"><div id="icon-tools" class="icon32"></div>';
    		echo '<h2>My Custom Submenu Page</h2>';
    	echo '</div>';
    }
    

    To hide your submenu link from a top level menu item to which it belongs you would instead do

    add_action('admin_menu', 'wpdocs_register_my_custom_submenu_page');
    
    function wpdocs_register_my_custom_submenu_page() {
    	add_submenu_page( 
    		null,   //or 'options.php'
    		'My Custom Submenu Page',
    		'My Custom Submenu Page',
    		'manage_options',
    		'my-custom-submenu-page',
    		'my_custom_submenu_page_callback',
    	);
    }
    
  2. Inside menu created with add_menu_page()
    If you are attempting to add a submenu page to a menu page created via add_menu_page() the first submenu page will be a duplicate of the parent add_menu_page().

    If you want a submenu page in this scenario, you should first create a duplicate of your add_menu_page() and then add your add_submenu_page():

    add_menu_page('My Custom Page', 'My Custom Page', 'manage_options', 'my-top-level-slug');
    add_submenu_page( 'my-top-level-slug', 'My Custom Page', 'My Custom Page',
    	'manage_options', 'my-top-level-slug');
    add_submenu_page( 'my-top-level-slug', 'My Custom Submenu Page', 'My Custom Submenu Page',
    	'manage_options', 'my-secondary-slug');
    
    

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