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php mqtt 实现

2026-02-28 13:52:54PHP

PHP 实现 MQTT 的方法

使用 phpMQTT 库

phpMQTT 是一个轻量级的 PHP MQTT 客户端库，适用于与 MQTT 代理通信。以下是基本实现步骤：

安装 phpMQTT 库：

composer require bluerhinos/phpmqtt

连接 MQTT 代理并发布消息：

require("phpMQTT.php");

$mqtt = new phpMQTT("broker.example.com", 1883, "phpMQTT Publisher");
if ($mqtt->connect()) {
    $mqtt->publish("topic/test", "Hello MQTT", 0);
    $mqtt->close();
}

订阅主题并接收消息：

$mqtt = new phpMQTT("broker.example.com", 1883, "phpMQTT Subscriber");
if(!$mqtt->connect()){
    exit();
}

$topics['topic/test'] = array("qos"=>0, "function"=>"procmsg");
$mqtt->subscribe($topics,0);

while($mqtt->proc()){ }

$mqtt->close();

function procmsg($topic, $msg){
    echo "Msg Received: $msg";
}

使用 Mosquitto 扩展

Mosquitto 提供了 PHP 扩展，允许更直接地与 MQTT 代理交互：

安装 Mosquitto 扩展：

pecl install Mosquitto-alpha

发布消息示例：

$client = new Mosquitto\Client();
$client->connect("broker.example.com", 1883, 60);
$client->publish("topic/test", "Hello from Mosquitto", 0, false);
$client->disconnect();

订阅消息示例：

$client = new Mosquitto\Client();

$client->onConnect(function() use ($client) {
    $client->subscribe("topic/test", 0);
});

$client->onMessage(function($message) {
    echo "Received message: {$message->payload} on topic {$message->topic}\n";
});

$client->connect("broker.example.com", 1883, 60);

while (true) {
    $client->loop();
    usleep(10000);
}

使用 Eclipse Paho PHP 客户端

Eclipse Paho 提供了 MQTT 客户端实现：

安装 Paho MQTT PHP：

composer require eclipse/paho.mqtt.php

发布消息示例：

use Eclipse\Paho\MQTT\Client;
use Eclipse\Paho\MQTT\Message;

$client = new Client("tcp://broker.example.com:1883", "php-client");
$client->connect();
$message = new Message("topic/test", "Hello Paho", 0, false);
$client->publish($message);
$client->disconnect();