Implement the HTTP server functionality in the Workerman document

To implement the HTTP server function in the Workerman document, specific code examples are required

In recent years, with the rapid development of Web technology, Web servers have become part of our daily work Indispensable part. Workerman is a high-performance PHP Socket framework that provides a concise and flexible way to implement HTTP server functions. In this article, we will provide you with specific code examples for the HTTP server functionality in the Workerman documentation.

First, we need to install Workerman, which can be installed through Composer. Open the command line tool, switch to your project directory, and execute the following command:

composer require workerman/workerman

After the installation is complete, we can start writing code. The following is a simple HTTP server sample code:

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

use WorkermanWorker;

// 创建一个Worker监听8090端口
$httpWorker = new Worker('http://0.0.0.0:8090');

// 启用多进程模式
$httpWorker->count = 4;

// 接收到http请求时的处理函数
$httpWorker->onMessage = function ($connection, $request) {
    // 根据请求的URI获取文件路径
    $path =  __DIR__ . '/public' . $request->uri;

    // 如果请求的文件存在则发送文件内容
    if (is_file($path) && file_exists($path)) {
        $connection->send(file_get_contents($path));
    } else {
        // 否则发送404 Not Found状态码
        $connection->sendHeader('HTTP/1.1 404 Not Found');
        $connection->send('404 Not Found');
    }
};

// 运行Worker
Worker::runAll();

In the above code, we first introduced Composer automatic loading. Then, we created a Worker instance listening on port 8090. And 4 processes are enabled to handle requests. Next, we define the onMessage event callback function. When an HTTP request is received, the callback function will be executed to process the request.

In the callback function, first obtain the requested file path through the requested URI, and then determine whether the file path exists. If it exists, the file content is sent to the client; if it does not exist, a 404 Not Found status code is sent.

Finally, we run the entire Worker by calling the Worker::runAll() method.

After completing the above code, we can execute the following command in the terminal to start the HTTP server:

php http_server.php start

Access via browserhttp://localhost:8090 , you can see the requested file content or 404 Not Found information.

This is a simple code example that uses Workerman to implement HTTP server functions. Through this example, we can learn how to create a Worker instance that listens to a specified port and handles received HTTP requests.

Of course, we can also expand and optimize the code according to specific needs. For example, routing functions can be added to handle different URL requests, parameters for POST requests can be parsed, etc. Workerman provides rich APIs and functions for developers to use flexibly.

In summary, Workerman is a powerful PHP Socket framework through which we can easily implement HTTP server functions. I hope the above code examples can help everyone develop higher-performance and more stable web applications.

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