The `add_submenu_page()` position is ignored.

[Howdy_McGee]

Hello,

I'm not sure that the add_submenu_page() position argument is being applied properly. See the below example:

<?php
add_action( 'admin_menu', function() {
        
        add_submenu_page(
                'edit.php',
                'Foo',
                'Foo',
                'list_users',
                'foo',
                function() {
                        echo 'Hello Foo';
                },
                200,
        );
        
        add_submenu_page(
                'edit.php',
                'Bar',
                'Bar',
                'list_users',
                'bar',
                function() {
                        echo 'Hello Bar';
                },
                100,
        );
        
} );

I would expect "Bar" to appear before "Foo" since it has a lower position number. What ends up happening is whichever add_submenu_page() was called first, gets position priority.

[SergeyBiryukov]

Thanks for the report!

Moving to the Administration component, as Menus is specifically for the Menus screen and nav menu functions.

Trac ticket: https://core.trac.wordpress.org/ticket/52035

[mukesh27]

Hi there!

Above attached ​PR #816 fixes the menu position issue.

[leogermani]

Hi @mukesh27 ,

I just stumbled upon this bug and had a look at your patch.

It doesn't solve the problem if there are multiple submenus being registered because apparently array keys get reset and the last menu registered will always end up in the last position.

I suggest start by writing some tests so we can cover many different situations. I'm happy to help testing and giving feedback to move this ticket forward.

And in the meantime I'm going to look for a workaround to my problem :)

[leogermani]

Also, it just occurred to me that there would be a problem if 2 submenus are registered using the same position.

[leogermani]

Introduced in #39776