2 if ($_SERVER["HTTP_IF_MODIFIED_SINCE"]) {
3 header("HTTP/1.0 304 Not Modified");
7 header("Cache-control: max-age=3600");
8 header("Expires: " . gmdate(DATE_RFC1123, time() + 600));
9 header("Last-Modified: " . gmdate(DATE_RFC1123, time() - 600));
10 header("Content-Type:text/javascript; charset=UTF-8");