Set Up PHP MQTT Server: Step-by-Step Guide

1 year ago
Benjamin Taylor
2 minutes

To set up a PHP MQTT server, you can follow these steps:

  1. Install a MQTT server
  2. You have the option to install open-source MQTT servers like Mosquitto or Eclipse Mosquitto, or commercial MQTT servers like EMQ X.
  3. Follow the official documentation of the selected server to install and complete basic configurations.
  4. Install PHP extensions
  5. To use MQTT in PHP, you need to install the PHP extension package for MQTT.
  6. You can use Composer to install PHP MQTT extensions like php-mqtt/client or bluerhinos/phpmqtt.
  7. Add the following dependencies in the composer.json file located in the project root directory, then run composer install to install the dependencies.
{
    "require": {
        "php-mqtt/client": "^0.3.0"
    }
}
  1. Create a PHP file and import the namespaces and classes related to MQTT.
  2. In the code, you can configure the connection to the MQTT server, subscribe to topics, and publish messages.
  3. Here is a basic example code:
<?php
require 'vendor/autoload.php'; // 根据实际安装的MQTT扩展引入对应的自动加载文件

use PhpMqtt\Client\MqttClient;

$mqtt = new MqttClient('mqtt://localhost'); // 设置MQTT服务器的地址

$mqtt->connect();

$mqtt->subscribe('topic'); // 设置订阅的主题

$mqtt->publish('topic', 'Hello, MQTT!'); // 发布消息

$mqtt->disconnect();
  1. Run a PHP script in the command line, for example, “php yourscript.php”.
  2. You will be able to connect to the MQTT server and carry out subscribe and publish operations.

Please note that the above steps are based on the assumption that you have already installed and configured an MQTT server. If you have not installed an MQTT server yet, please refer to the official documentation of your selected server for installation and configuration instructions.

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