Include a PHP file inside an array

Question

I'm trying to add a custom PHP script inside of the nav menu (before the closing ) and struggling.

Code here:

<?php
      wp_nav_menu(array(
                        'theme_location' => 'menu-1',
                        'menu_id' => 'primary-menu',
                        'items_wrap' => '<ul id="%1$s" class="%2$s">%3$s<div class="my-div">' . $addCats . '</div></ul>'
                    ));
      $addCats = require_once('custom_menu_addon.php');
?>

The above code includes the file outside of the new added to the menu:

Any recommendations for getting this to print inside the div? Am I using the wrong command to pull the file contents there?

Thank you in advance for your help and guidance! <3

Answer 1

Please Use Below code

<?php
$addcats = array();
ob_start();
require 'custom_menu_addon.php';
$addCats = ob_get_clean();
wp_nav_menu(array(
    'theme_location' => 'menu-1',
    'menu_id' => 'primary-menu',
    'items_wrap' => '<ul id="%1$s" class="%2$s">%3$s<div class="my-div">' . $addCats . '</div></ul>'
));

I've edited this answer after some research into the usage of this object array and put it in context with my code, works well on the site :)