PHP CURL returns nothing

function ParseUrl($URL)
{
    $crl = curl_init();
    curl_setopt ($crl, CURLOPT_URL, $URL);
    curl_setopt ($crl, CURLOPT_PORT, 8086);
    curl_setopt ($crl, CURLOPT_USERPWD, "admin:pass");
    curl_setopt ($crl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt ($crl, CURLOPT_CONNECTTIMEOUT, 5);
    $ret = curl_exec($crl);
    curl_close($crl);
    return $ret;
}

echo ParseUrl('http://xxx.me/serverinfo');

The code above simply returns nothing. The page I am trying to get with curl uses http authentication thing.

Am I missing something simple or what?