remove http & www from domain

gistfile1.txt

    function cleanDomain($url) {
        $disallowed = array('http://', 'https://', 'www.', 'http://www.', 'https://www.');
        foreach ($disallowed as $d) {
            if (strpos($url, $d) === 0) {
                return str_replace($d, '', $url);
            }
        }
        return $url;
    }