Location: PHPKode > projects > WordPress > wordpress/wp-admin/ms-upgrade-network.php
<?php
/**
 * Multisite upgrade administration panel.
 *
 * @package WordPress
 * @subpackage Multisite
 * @since 3.0.0
 */

require_once('admin.php');

wp_redirect( network_admin_url('upgrade.php') );
exit;

?>
Return current item: WordPress