$url = parse_url($url);
if ($fp = @fsockopen($url['host'], empty($url['port']) ? 80 : $url['port'], $error)) {
fputs($fp, "GET " . (empty($url['path']) ? '/' : $url['path']) . " HTTP/1.1\r\n");
fputs($fp, "Host: {$url['host']}\r\n\r\n");
while (!feof($fp)) {
$tmp = fgets($fp);
if (trim($tmp) == '') {
break;
} else if (preg_match('/Content-Type:(.*)/si', $tmp, $arr)) {
return trim((string)$arr[1]);
}
}
return null;
} else {
return null;
}