问题描述：

I want to add number of items in wishlist next to li element in my \"menu_main\". To problem is I can\'t how to edit that specific element. I tried sth like

add_filter( \'nav_menu_item_id\', \'filter_function_name_5519\', 10, 3 );
function filter_function_name_5519( $menu_id, $item, $args ){
// filter...
if (!is_admin() && $args->theme_location == \'menu_main\' && 
yith_wcwl_count_products() && $menu_id == \'menu-item-5519\') {
$item .= \'<li>\' . yith_wcwl_count_products() . \'</li>\';
}
return $item;
}

But that doesn\'t work. Important for me is to echo yith_wcwl_count_products() within li element, because I need to position it with css via position relative and absolute.

网友观点：

 add_filter(\'nav_menu_item_id\', \'filter_function_name_5519\', 10, 3);
function filter_function_name_5519($menu_id, $item, $args)
{
if (!is_admin() && $menu_id == \'menu-item-42\') {
$item->title .= \' test \';
}
}