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php mqtt 实现

2026-02-14 14:39:06PHP

PHP 实现 MQTT 通信的方法

使用 PHP 实现 MQTT 通信可以通过第三方库或扩展完成，以下是常见的实现方式：

使用 `php-mqtt/client` 库

php-mqtt/client 是一个纯 PHP 实现的 MQTT 客户端库，支持 MQTT 3.1 和 3.1.1 协议。

安装依赖：

composer require php-mqtt/client

发布消息示例：

<?php
use PhpMqtt\Client\MqttClient;
use PhpMqtt\Client\ConnectionSettings;

$server   = 'broker.example.com';
$port     = 1883;
$clientId = 'php-publisher';
$username = 'user';
$password = 'pass';

$mqtt = new MqttClient($server, $port, $clientId);
$connectionSettings = (new ConnectionSettings)
    ->setUsername($username)
    ->setPassword($password);

$mqtt->connect($connectionSettings, true);
$mqtt->publish('topic/test', 'Hello World!', 0);
$mqtt->disconnect();

订阅消息示例：

<?php
use PhpMqtt\Client\MqttClient;
use PhpMqtt\Client\ConnectionSettings;

$server   = 'broker.example.com';
$port     = 1883;
$clientId = 'php-subscriber';
$username = 'user';
$password = 'pass';

$mqtt = new MqttClient($server, $port, $clientId);
$connectionSettings = (new ConnectionSettings)
    ->setUsername($username)
    ->setPassword($password);

$mqtt->connect($connectionSettings, true);
$mqtt->subscribe('topic/test', function ($topic, $message) {
    echo "Received message on topic [$topic]: $message\n";
}, 0);

$mqtt->loop(true);
$mqtt->disconnect();

使用 `Mosquitto` PHP 扩展

Mosquitto 是一个流行的 MQTT 代理，其 PHP 扩展提供了原生支持。

安装扩展：

pecl install Mosquitto-alpha

发布消息示例：

<?php
$client = new Mosquitto\Client('php-publisher');
$client->setCredentials('user', 'pass');
$client->connect('broker.example.com', 1883, 60);

$client->onConnect(function() use ($client) {
    $client->publish('topic/test', 'Hello World!', 0, false);
});

$client->loopForever();

订阅消息示例：

<?php
$client = new Mosquitto\Client('php-subscriber');
$client->setCredentials('user', 'pass');
$client->connect('broker.example.com', 1883, 60);

$client->onMessage(function($message) {
    printf("Received message on topic [%s]: %s\n", 
        $message->topic, $message->payload);
});

$client->subscribe('topic/test', 0);
$client->loopForever();

使用 `Bluerhinos/phpMQTT` 库

这是一个轻量级的 PHP MQTT 客户端库，适合简单场景。

安装依赖：

composer require bluerhinos/phpmqtt

基本使用示例：

php mqtt 实现

<?php
require('phpMQTT.php');

$server = 'broker.example.com'; 
$port   = 1883;
$username = 'user';
$password = 'pass';
$client_id = 'php-client';

$mqtt = new Bluerhinos\phpMQTT($server, $port, $client_id);
if ($mqtt->connect(true, NULL, $username, $password)) {
    $mqtt->publish('topic/test', 'Hello World!', 0);
    $mqtt->close();
} else {
    echo "Connection failed\n";
}