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Workerman Development Model: Best Practices for Implementing Real-time Data Push Functions

PHPzOriginal: 2023-08-05 08:13:131119browse

Workerman Development Model: Best Practices for Real-time Data Push Function

Introduction:
With the rapid development of the Internet, real-time data push has become a necessary function for many applications. In the field of PHP, Workerman is undoubtedly one of the most powerful real-time data push frameworks. This article will describe how to use Workerman to develop real-time data push capabilities and provide some best practice code examples.

1. What is Workerman?
Workerman is a high-performance PHP asynchronous network communication framework in the PHP field. It is developed based on pure PHP without any dependencies and can run independently. Workerman adopts a non-blocking IO model and can handle a large number of concurrent connections. At the same time, it also provides a convenient and easy-to-use interface, allowing developers to quickly develop high-performance real-time applications.

2. Create a simple real-time data push application
First, we need to use composer to install Workerman:

composer require workerman/workerman

Then, we create a server.php file and enter the following code :

<?php
require_once __DIR__ . '/vendor/autoload.php';

use WorkermanWorker;

// 创建一个Worker监听8080端口，使用websocket协议通讯
$ws_worker = new Worker('websocket://0.0.0.0:8080');

// 启动4个进程对外提供服务
$ws_worker->count = 4;

// 当客户端与服务端建立连接时触发
$ws_worker->onConnect = function ($connection) {
    echo "New connection
";
};

// 当客户端给服务端发送消息时触发
$ws_worker->onMessage = function ($connection, $data) use ($ws_worker) {
    // 将消息广播给所有客户端
    foreach ($ws_worker->connections as $client_connection) {
        $client_connection->send($data);
    }
};

// 当客户端与服务端断开连接时触发
$ws_worker->onClose = function ($connection) {
    echo "Connection closed
";
};

// 运行worker
Worker::runAll();

This code simply creates a websocket server, and when a new client connects, sends a message, or disconnects, the corresponding event will be triggered. The specific event processing logic can be modified according to actual needs.

3. Client Code Example
In order to test our real-time data push function, we can create a simple html file to simulate the client. In this html file, we use javascript to implement websocket connection and send and receive messages.

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>实时数据推送</title>
    <script>
        var ws = new WebSocket('ws://127.0.0.1:8080');

        ws.onopen = function () {
            console.log('已连接服务器');
        };

        ws.onmessage = function (event) {
            console.log('收到消息：' + event.data);
        };

        function send() {
            var message = document.getElementById('message').value;
            ws.send(message);
            console.log('发送消息：' + message);
        }
    </script>
</head>
<body>
    <input type="text" id="message" placeholder="请输入要发送的消息">
    <button onclick="send()">发送</button>
</body>
</html>

This javascript code will create a websocket connection and define events related to establishing a connection with the server, receiving messages, and sending messages. By entering the message to be sent in the input box and clicking the "Send" button, the message can be sent to the server and the received message will be displayed on the console.

4. Best Practices
In actual development, there are many factors that need to be considered, such as permission control, group management, message verification, etc. Here is some sample code for best practices:

User login verification:

// 在onConnect事件中验证用户登录
$ws_worker->onConnect = function ($connection) {
    // 获取用户token
    $token = $connection->getRequestHeader('token');
    // 验证token
    if (!verifyToken($token)) {
        $connection->close();
    }
};

Group management:

// 创建分组、加入分组和发送给指定分组的示例代码
$group = new WorkermanConnectionConnections();
$group->add($client_connection);
$ws_worker->group['group_name'] = $group;
...

// 发送消息给指定分组
$ws_worker->group['group_name']->send($data);

Send a message to the specified client:

// 在onMessage事件中判断要发送的客户端id
$id = $data['recipient_id'];
if ($connection = $ws_worker->uidConnections[$id] ?? null) {
    // 找到对应的客户端连接并发送消息
    $connection->send($data);
}

Conclusion:
This article introduces how to use the Workerman framework to develop real-time data push functions and provides some best practice code examples. By studying these examples, I believe readers can quickly get started with Workerman and use it to develop high-performance real-time applications. If you want to continue learning about Workerman in depth, you can refer to its detailed official documentation. I wish you all the best to use Workerman to develop real-time data push function!

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