PHP扩展PHPredis获取数据返回类似 :1数据

<code>while (true)
        {
            $list = $redis-&gt;blpop(DXKey::getKeyOfRunnerEmailTaskListPending(), 6);
            
            if (is_array($list) &amp;&amp; count($list) == 2)
            {
                DXUtil::consoleLog(DXUtil::jsonEncode($list));
                $payload = $list[1];
                DXUtil::consoleLog('pop: ' . $payload);
                $task = @json_decode($payload, true);
                MailTaskRunner::runEmailTask($task);
            }
           
        }</code>

<code>2016-11-23 19:23:07 start
2016-11-23 19:23:08 ["runner.email.task.list.pending","{\"time\":1479900188,\"type\":1,\"data\":{\"to_address\":\"wqcsimple@foxmail.com\",\"task_id\":1}}"]
2016-11-23 19:23:08 pop: {"time":1479900188,"type":1,"data":{"to_address":"wqcsimple@foxmail.com","task_id":1}}
2016-11-23 19:23:08 send success
</code>