Remote url mime type function

PHP function to return a remote url mime type:

function get_remote_mime_type($url)
{
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_NOBODY, 1);
curl_exec($ch);
return curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
}