public function addServers($servers)
    {
        foreach ((array)$servers as $svr) {
            $host = array_shift($svr);

            $port = array_shift($svr);
            if (is_null($port)) {
                $port = 11211;
            }

            $weight = array_shift($svr);
            if (is_null($weight)) {
                $weight = 0;
            }

            $this->addServer($host, $port, $weight);
        }

        return true;
    }