Base::blacklisted PHP Method

    function blacklisted($ip)
    {
        if ($this->hive['DNSBL'] && !in_array($ip, is_array($this->hive['EXEMPT']) ? $this->hive['EXEMPT'] : $this->split($this->hive['EXEMPT']))) {
            // Reverse IPv4 dotted quad
            $rev = implode('.', array_reverse(explode('.', $ip)));
            foreach (is_array($this->hive['DNSBL']) ? $this->hive['DNSBL'] : $this->split($this->hive['DNSBL']) as $server) {
                // DNSBL lookup
                if (checkdnsrr($rev . '.' . $server, 'A')) {
                    return TRUE;
                }
            }
        }
        return FALSE;
    }