onWorkerStart = function(){ $mqtt = new Workerman\Mqtt\Client('mqtt://broker.emqx.io:1883', array( 'debug' => true, "username"=>"rw", "password"=>"readwrite" )); $mqtt->onConnect = function($mqtt) { $mqtt->subscribe('workerman'); }; $mqtt->onMessage = function($topic, $content){ echo "topic:$topic content:$content\n"; }; $mqtt->connect(); }; Worker::runAll();