php $arr_browser = array ("iPhone","iPod","IEMobile","Mobile","lgtelecom","PPC"); for($indexi = 0 ; $indexi < count($arr_browser) ; $indexi++) { if(strpos($_SERVER['HTTP_USER_AGENT'],$arr_browser[$indexi]) == true){ header("Location: http://math.kangwon.ac.kr/xe"); exit; } } ?> $LastModified = gmdate("D d M Y H:i:s", filemtime($HTTP_SERVER_VARS[SCRIPT_FILENAME])); header("Last-Modified: $LastModified GMT"); header("ETag: \"$LastModified\""); ?>