MQTT-PHP订阅卡在循环中

Question

我是MQTT的新手，我有一个问题，这段代码必须在命令行上运行，否则它就会陷入循环，我需要它在xampp服务器启动后在后台运行

$mqtt = new \PhpMqtt\Client\MQTTClient($server, $port, $clientId);
$connectionSettings = new \PhpMqtt\Client\ConnectionSettings();
$mqtt->connect("user", "pass", $connectionSettings, true);


$mqtt->subscribe('switches/#', function ($topic, $message) {
 
    //echo "here";
    //echo "$d\n";
  $fp = fopen('brlogs.txt', 'a');//opens file in append mode  
fwrite($fp, "$d\n");  
 
fclose($fp);  

}, 0);
$mqtt->loop(true);

Answer 1

在被$mqtt->interrupt()中断之前，$mqtt->loop(true)调用将一直被阻塞

请参阅docs

如果你想让它在后台运行，你需要在它自己的线程上运行它，我建议你看看线程docs