0, 'prefetch_count' => 1, ]; public function consume(Message $message, Channel $channel, AbstractClient $client) { echo " [x] Received ", $message->content, "\n"; sleep(substr_count($message->content, '.')); echo " [x] Done", $message->content, "\n"; $channel->ack($message); } }; $worker->onWorkerStart = [$consumer, 'onWorkerStart']; Worker::runAll();