Duplicate WordPress Menus Across a Network of Sites

We recently had to duplicate WordPress menus across a network of sites, and found the available documentation on the matter lacking. In the spirit of bettering the WordPress community, I present the following code snippet.

The code snippet could be included in a plugin (that’s where we used it, to be triggered from the Dashboard), or as a use-once line in the functions.php file in your theme. It relies on being passed an array of ID’s that represent sites in your network.

global $wpdb;
//$blog_list is an array of ID's of sites on the network
foreach ($blog_list AS $blog_id)
  wp_delete_nav_menu('YourNavName');//save some hassle, delete the menu if it already exists
  $navID = wp_create_nav_menu('YourNavName');
  $myPage = get_page_by_title('Page Title');//find a page to include in new menu
  if($myPage != null)//if we were successful in getting the page
    $itemData =  array(
      'menu-item-object-id' => $myPage->ID,
      'menu-item-object' => 'page',
      'menu-item-type' => 'post_type',
      'menu-item-status' => 'publish'
  //following section assigns your new menu to a theme location, so that it can show up on your site
  $locations = get_theme_mod('nav_menu_locations');
  $locations['nav_name'] = $navID;//where nav_name is the name of your menu
  set_theme_mod('nav_menu_locations', $locations);


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