pfsense add or remove a custom menu item from php

<?php

require_once("config.inc");

/*
 a check should be added to avoid duplicate items..
*/
/*
$menu = array();
$menu['name'] = "NEW MENU ITEM";
$menu['section'] = "Services";
$menu['url'] = "http://www.pfsense.org";
$config['installedpackages']['menu'][] = $menu;
*/


function deleteMenu($menu) {
	global $config;
	$menus =&$config['installedpackages']['menu'];
	
	foreach ($menus as $key => $instmenu) {
		if ($instmenu['name'] == $menu) {
			unset($menus[$key]);
			break;
		}
	}
}
deleteMenu("NEW MENU ITEM");

write_config("Menu change saved");