Remote File Size PHP Function

PHP function for finding remote file size

function remotefilesize($url, $user = "", $pw = "")

{

ob_start();

$ch = curl_init($url);

curl_setopt($ch, CURLOPT_HEADER, 1);

curl_setopt($ch, CURLOPT_NOBODY, 1);

if(!empty($user) && !empty($pw))

{

$headers = array('Authorization: Basic ' . base64_encode("$user:$pw"));

curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

}

$ok = curl_exec($ch);

curl_close($ch);

$head = ob_get_contents();

ob_end_clean();

$regex = '/Content-Length:\s([0-9].+?)\s/';

$count = preg_match($regex, $head, $matches);

return isset($matches[1]) ? $matches[1] : "unknown";

}