Use php to develop Websocket and create a real-time message push system-PHP Tutorial-php.cn

Home

Backend Development

PHP Tutorial

Use php to develop Websocket and create a real-time message push system

PHPz

Dec 02, 2023 am 09:17 AM

phpwebsocketReal-time message push

Use php to develop Websocket and create a real-time message push system

Use PHP to develop WebSocket to create a real-time message push system

Introduction
With the increase in real-time communication needs, a real-time message push system based on WebSocket Increasingly popular in web development. This article will introduce how to use PHP to develop a simple WebSocket application to implement real-time message push function.
What is WebSocket?
WebSocket is a protocol for full-duplex, two-way communication over a single TCP connection. Compared with the traditional HTTP protocol, WebSocket can provide faster, real-time data transmission and is suitable for scenarios that require real-time message push.
Development environment preparation
Before we start, we need to prepare the following tools and environments:
PHP 7.0: This article uses PHP as the server-side language and needs to use PHP's WebSocket extension .
Apache or Nginx: As a web server, used to establish a WebSocket connection between the client and the server.
WebSocket client: It can be any browser or debugging tool that supports WebSocket.
Server-side code example
First, we need to create a WebSocket server instance on the server side and listen to the specified port.

// 创建WebSocket服务器实例，监听指定端口
$server = new SwooleWebSocketServer('0.0.0.0', 9501);

// 监听WebSocket连接打开事件
$server->on('open', function (SwooleWebSocketServer $server, SwooleHttpRequest $request) {
    echo "WebSocket连接打开
";
});

// 监听WebSocket消息事件
$server->on('message', function (SwooleWebSocketServer $server, SwooleWebSocketFrame $frame) {
    echo "收到消息：{$frame->data}
";
    // 推送消息给所有连接的客户端
    $server->push($frame->fd, "服务器收到消息：{$frame->data}");
});

// 监听WebSocket连接关闭事件
$server->on('close', function (SwooleWebSocketServer $server, int $fd) {
    echo "WebSocket连接关闭
";
});

// 启动WebSocket服务器
$server->start();

The above code uses the Swoole extension to create a WebSocket server instance and listen to port 9501. Whenever a client connects, sends a message, or closes a connection, the corresponding event handler is triggered.

Client code example
Next, we need to establish a WebSocket connection on the client side to achieve real-time communication with the server.

<!DOCTYPE html>
<html>
<head>
    <title>WebSocket示例</title>
</head>
<body>
    <script type="text/javascript">
        // 创建WebSocket对象，与服务器建立连接
        var ws = new WebSocket('ws://localhost:9501');

        // 监听WebSocket连接打开事件
        ws.onopen = function () {
            console.log('WebSocket连接已打开');
        };

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

        // 监听WebSocket连接关闭事件
        ws.onclose = function () {
            console.log('WebSocket连接已关闭');
        };

        // 发送消息
        function sendMessage() {
            var message = document.getElementById('message').value;
            ws.send(message);
        }
    </script>

    <input type="text" id="message" placeholder="输入消息" />
    <button onclick="sendMessage()">发送消息</button>
</body>
</html>

The above code uses JavaScript on the browser side to create a WebSocket object and establish a connection with the server. By listening to WebSocket events, functions such as receiving messages, sending messages, and capturing connection closures can be implemented.

Run and Test
Run the server-side code in the command line window to start the WebSocket server. Then, open the client page through the browser and establish a WebSocket connection.

Now, you can enter a message on the client page and send it, and the server will receive and reply with the corresponding message. At the same time, the received message will be displayed on the client page.

Summary
Through the introduction of this article, you can learn how to use PHP to develop a simple WebSocket application to implement real-time message push function. Of course, the above code is just a basic example, and you can expand and optimize it according to actual needs.

WebSocket's real-time communication capabilities provide more possibilities for Web development, especially suitable for scenarios such as chat applications, real-time monitoring and notifications. I believe this article can help you get started with WebSocket development and inspire more creativity and ideas.

The above is the detailed content of Use php to develop Websocket and create a real-time message push system. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

PHP Performance Tuning for High Traffic WebsitesMay 14, 2025 am 12:13 AM

ThesecrettokeepingaPHP-poweredwebsiterunningsmoothlyunderheavyloadinvolvesseveralkeystrategies:1)ImplementopcodecachingwithOPcachetoreducescriptexecutiontime,2)UsedatabasequerycachingwithRedistolessendatabaseload,3)LeverageCDNslikeCloudflareforservin

Dependency Injection in PHP: Code Examples for BeginnersMay 14, 2025 am 12:08 AM

You should care about DependencyInjection(DI) because it makes your code clearer and easier to maintain. 1) DI makes it more modular by decoupling classes, 2) improves the convenience of testing and code flexibility, 3) Use DI containers to manage complex dependencies, but pay attention to performance impact and circular dependencies, 4) The best practice is to rely on abstract interfaces to achieve loose coupling.

PHP Performance: is it possible to optimize the application?May 14, 2025 am 12:04 AM

Yes,optimizingaPHPapplicationispossibleandessential.1)ImplementcachingusingAPCutoreducedatabaseload.2)Optimizedatabaseswithindexing,efficientqueries,andconnectionpooling.3)Enhancecodewithbuilt-infunctions,avoidingglobalvariables,andusingopcodecaching

PHP Performance Optimization: The Ultimate GuideMay 14, 2025 am 12:02 AM

ThekeystrategiestosignificantlyboostPHPapplicationperformanceare:1)UseopcodecachinglikeOPcachetoreduceexecutiontime,2)Optimizedatabaseinteractionswithpreparedstatementsandproperindexing,3)ConfigurewebserverslikeNginxwithPHP-FPMforbetterperformance,4)

PHP Dependency Injection Container: A Quick StartMay 13, 2025 am 12:11 AM

APHPDependencyInjectionContainerisatoolthatmanagesclassdependencies,enhancingcodemodularity,testability,andmaintainability.Itactsasacentralhubforcreatingandinjectingdependencies,thusreducingtightcouplingandeasingunittesting.

Dependency Injection vs. Service Locator in PHPMay 13, 2025 am 12:10 AM

Select DependencyInjection (DI) for large applications, ServiceLocator is suitable for small projects or prototypes. 1) DI improves the testability and modularity of the code through constructor injection. 2) ServiceLocator obtains services through center registration, which is convenient but may lead to an increase in code coupling.

PHP performance optimization strategies.May 13, 2025 am 12:06 AM

PHPapplicationscanbeoptimizedforspeedandefficiencyby:1)enablingopcacheinphp.ini,2)usingpreparedstatementswithPDOfordatabasequeries,3)replacingloopswitharray_filterandarray_mapfordataprocessing,4)configuringNginxasareverseproxy,5)implementingcachingwi

PHP Email Validation: Ensuring Emails Are Sent CorrectlyMay 13, 2025 am 12:06 AM

PHPemailvalidationinvolvesthreesteps:1)Formatvalidationusingregularexpressionstochecktheemailformat;2)DNSvalidationtoensurethedomainhasavalidMXrecord;3)SMTPvalidation,themostthoroughmethod,whichchecksifthemailboxexistsbyconnectingtotheSMTPserver.Impl

See all articles