To check if a menu exists, I use this:

if ( isset ( $GLOBALS['admin_page_hooks']['menu-slug'] ) ){}

But it doesn't work with submenus.

How can I do the same for submenus then?

Thank you.


I also tried:

global $submenu;

if (isset($submenu['mymenu-slug']) && in_array('mysubmenu-slug', wp_list_pluck($submenu['mymenu-slug'], 2))) 

$test remains equal to 0.

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