How to add get_home_url() to custom menu link (WP)?

Question

WordPress

Hello.
The meaning is this. Arbitrary links can be added to the WP menu. I need the link to look like: http://site.ru/#id1But I don't want to write down the site address. WP has a tag get_home_url()that adds the URL of the main page. But in the control panel, where menu items are edited:
if you do this get_home_url()#id1, then garbage comes out, because PHP is not perceived there.
The question is, how can this be implemented?

Answer 1

More or less like this

add_filter('wp_nav_menu_items','add_search_box_to_menu', 10, 2);
function add_search_box_to_menu( $items, $args ) {
        return preg_replace('/#/i', get_home_utl() . '#',$items);
}

Answer 2

So just assign / # id1 - the link will go from the root. The truth is that wordpress should not be in a subfolder, but in the root of the domain.