function _ldap_services_get_childs($parent_id, $level = 0,  $ldap_server) {
	$query = '(&(supannRefId={HARPEGE})(supannCodeEntiteParent=' . $parent_id . '))';
// 	print 	$query . "<br>";

	$arrs = $ldap_server->search('dc=etu.univ-montp3,dc=fr', $query);
	echo str_repeat("-", $level) . " " . $parent_id . "<br />";
	$branch = array();
	foreach ($arrs as $arr) {
		if($arr['supanncodeentite'][0]) {
			echo str_repeat("-", $level + 1)." ". $arr['supanncodeentite'][0]."<br />";
			if($arr['supanncodeentiteparent'][0] == $parent_id && $level < 3) {
				$children = _ldap_services_get_childs($arr['supanncodeentite'][0], $level ++, $ldap_server);
// 				if ($children) {
//                 	$arr['children'] = $children;
// 				}
// 				$branch[$arr['supanncodeentiteparent'][0]][] = $arr;
// 				$branch[$arr['supanncodeentite'][0]]['title'] = $arr['description'][0];
// 				$branch[$arr['supanncodeentite'][0]]['items'] = $arr;
			}
		}
    }
    return $branch;
}