Function to print the $menu and $submenu array in WordPress.

array.txt

//Found here: https://wordpress.org/support/topic/how-to-rename-the-admin-sub-menu-name-of-a-custom-post-category-or-tag
function wptutsplus_change_post_menu_label() {
    global $menu;
    global $submenu;
    echo "<pre>";
    print_r($menu);
    print_r($submenu);
    echo "</pre>";
}
add_action( 'admin_menu', 'wptutsplus_change_post_menu_label' );