function is_iPhone($agent='') { $s5_isiphone; if(empty($agent)) $agent = $_SERVER['HTTP_USER_AGENT']; if(!empty($agent) and preg_match("~Mozilla/[^ ]+ \((iPhone|iPod); U; CPU [^;]+ Mac OS X; [^)]+\) AppleWebKit/[^ ]+ \(KHTML, like Gecko\) Version/[^ ]+ Mobile/[^ ]+ Safari/[^ ]+~",$agent,$match)) { return "YES"; } elseif(stristr($agent,'iphone') or stristr($agent,'ipod')){ return "YES";} else {return "NO"; }} $s5_isiphone = is_iPhone(); ?>