Habari\InputFilter::parse_url PHP Method

    public static function parse_url($url)
    {
        // result array
        $r = array('scheme' => '', 'host' => '', 'port' => '', 'user' => '', 'pass' => '', 'path' => '', 'query' => '', 'fragment' => '', 'is_relative' => false, 'is_pseudo' => false, 'is_error' => false, 'pseudo_args' => '');
        // sanitize the url
        $sanitized = html_entity_decode($url, null, 'UTF-8');
        // make double-sure we've converted all entities
        $sanitized = filter_var($sanitized, FILTER_SANITIZE_URL);
        // strip everything but ascii, essentially
        $sanitized_scheme = parse_url($sanitized, PHP_URL_SCHEME);
        // Use PHP's parse_url to get the basics
        $parsed = parse_url($url);
        if ($parsed == false) {
            $r['is_error'] = true;
            return $r;
        }
        $r = array_merge($r, $parsed);
        // replace the scheme with the one we got from the fully-sanitized string
        $r['scheme'] = $sanitized_scheme;
        $r['is_pseudo'] = !in_array($r['scheme'], array('http', 'https', ''));
        $r['is_relative'] = $r['host'] == '' && !$r['is_pseudo'];
        if ($r['is_pseudo']) {
            $r['pseudo_args'] = $r['path'];
            $r['path'] = '';
        }
        return $r;
    }