Yii2/redis and receive messages from Pub/Sub Subscription

Yii 2.0 Extensions
1

Hello,

I’m not sure if this feature is implemented in Yii2-redis extension.

I want to work with Pub/Sub using this extension, specifically receive messages of a subscribed key in Redis. Publish part is working fine.

I have tried several ways to receive the messages from other publishers:

  1. Passing as the latest parameter an array formed by [<instance>, <function name>] or a string with the function name. This is how native PHP redis driver works. But I get an error saying: ‘mb_strlen() expects parameter 1 to be string, object given’



$subscriptionResponse = Yii::$app->redisSubscriber->subscribe(

    'sync',

    [$this, '_handleSyncInMessage']

);

or


$subscriptionResponse = Yii::$app->redisSubscriber->subscribe(

    'sync',

    '_handleSyncInMessage'

);
  1. Putting the callback function inline. Doesn’t work neither. The same error: ‘mb_strlen() expects parameter 1 to be string, object given’

$subscriptionResponse = Yii::$app->redisSubscriber->subscribe(

    'sync',

    function($redis, $channel, $message) {

      echo 'Never arrived here..."

    }

);

The following code doesn’t throw any error, but I don’t know how to receive the messages when other processes publish in the key ‘sync’:




Yii::$app->redisSubscriber->subscribe('sync');

Anyone has a working example of this?

Thank you very much!