Check if redis with password is running

I have Laravel 5.1 and I have a redis server. But I would, before launching an event on redis, check if it is running. But my problem is that I'have put a password on redis and know my code for check doesn't work. Before insert password my code was:

$redis = Redis::connection();
        $host = $redis->getConnection()->getParameters()->host;
        $port = $redis->getConnection()->getParameters()->port;
        $fp = @fsockopen($host, $port);

        if (!$fp){
            return false;
        }else{
            return true;
        };

How Can I add password for ping redis?

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