首先应该是订阅,订阅成功之后才能收到对应主题的发布消息,创建一个subscribe.php写入以下内容 代码语言:javascript 代码运行次数:0 运行 AI代码解释 include __DIR__.'/vendor/autoload.php';use Simps\MQTT\Hex\ReasonCode;use Swoole\Coroutine;use Simps\MQTT\Client;use Simps\MQTT\Types;$config=['host'=>'b...
$mqtt_version);$mqtt->connect($connectionSettings,$clean_session);printf("client connected\n");$mqtt->subscribe('emqx/test', function ($topic,$message) {printf("Received message on topic [%s]: %s\n",$topic,$message);
$mqtt->subscribe($topic); while ($mqtt->proc()) { // 处理接收到的消息 } “` 使用Mosquitto PHP扩展订阅消息的示例代码如下: “` $topic = “my/topic”; $mqtt->onMessage(function($message) { // 处理接收到的消息 }); $mqtt->subscribe($topic); $mqtt->loopForever(); “` 5. 断开连...
$mqtt->subscribe(“topic/example”, function($topic, $message) { echo “Received message: $message on topic: $topic\n”; }); “` 在上面的示例中,”topic/example”是要订阅的主题。当有消息发布到该主题时,回调函数会被触发,并打印出接收到的消息和主题。 4. 保持订阅 为了保持订阅的持续性,可以...
{ echo "Message could not be sent "; } $mqtt->subscribe($topic, $qos, function($topic, $msg) { echo "Message received on topic [$topic]: $msg "; }); // Keep the script running to receive messages while($msg = $mqtt->procMsg()) { } $mqtt->close(); } else {...
$mqtt->subscribe($topics, 0); while($mqtt->proc()){ } //死循环监听 $mqtt->close(); function procmsg($topic, $msg){ //信息回调函数 打印信息 echo "Msg Recieved: " . date("r") . "\n"; echo "Topic: {$topic}\n\n";
(Exception $e){ } } public function subscribe() { $mqtt = new phpMQTT("localhost", 1883, "ClientId".uniqid()); if ($mqtt->connect()) { $topic = "A"; // 你的主题 $mqtt->subscribe($topic, 0); while ($mqtt->proc()) { } $mqtt->close(); } else { echo "连接失败"; }...
}//currently subscribed topics$topics['topic'] =array("qos"=>0, "function"=>"procmsg");$mqtt->subscribe($topics,0);while($mqtt->proc()){//无限去请求}$mqtt->close();functionprocmsg($topic,$msg){//输出消息echo"Msg Recieved:$msg"; ...
use Mosquitto\Client; //这里2个use直接引用 use Mosquitto\Message; /** * @param string $topic * @param \Closure $closure */ public function subscribe(string $topic, \Closure $closure): void { $client = new Client(); //创建客户端 $client->setCredentials("newton", 'sh$an#non!cit?y'...
socket_write($socket, $subscribe_packet, strlen($subscribe_packet)); “` – 接收消息:服务器通过PUBLISH控制报文发送消息给订阅该主题的客户端,客户端可以通过socket读取服务器返回的数据来接收消息。 “` php $response = socket_read($socket, 1024); ...