How to use various push extensions to implement scheduled message push functions in PHP applications-PHP Tutorial-php.cn

How to use various push extensions to implement scheduled message push functions in PHP applications

王林

Release： 2023-07-25 22:54:02

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How to use various push extensions to implement scheduled message push functions in PHP applications

In modern Web applications, message push has become a very important and commonly used function. Through push messaging, we can notify users in real time about new messages, reminders, updates, and more. In PHP applications, there are many push extensions that you can choose to use, such as Swoole, Laravel push extensions, WebSocket, etc. This article will introduce how to use these push extensions to implement scheduled message push functions in PHP applications.

1. Use Swoole extension
Swoole is a high-performance asynchronous, parallel PHP network communication extension. It provides communication methods such as WebSocket, HTTP protocol and TCP/UDP protocol. In Swoole, we can easily implement the scheduled message push function. The following is a sample code that uses Swoole to implement scheduled message push:

<?php
 
// 创建一个Swoole HTTP服务器
$http = new SwooleHttpServer('0.0.0.0', 9501);
 
// 设置定时器，每隔1秒执行一次
$http->tick(1000, function () use ($http) {
    // 遍历所有连接，推送消息
    foreach ($http->connections as $fd) {
        $http->push($fd, 'Hello, Swoole!');
    }
});
 
// 启动HTTP服务器
$http->start();

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In the above code, we created a Swoole HTTP server and set a timer using the tick method to execute every 1 second. In the timer callback function, we traverse all connections and push messages to the client through the push method.

2. Use Laravel's push extension
If your project is based on the Laravel framework, then you can use Laravel's push extension to implement the scheduled message push function. Laravel's push extension provides a way to push messages to the browser in a non-blocking manner, which can be achieved using Server-Sent Events (SSE) or Long Polling technology.

The following is a sample code that uses Laravel's push extension to implement scheduled message push:

<?php
 
use IlluminateSupportFacadesHttp;
 
// 定时任务
$schedule->call(function () {
    // 向指定URL发送请求，触发推送消息
    Http::post('http://example.com/push', [
        'message' => 'Hello, Laravel Pusher!',
    ]);
})->everyMinute(); // 每分钟执行一次

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In the above code, we use Laravel's scheduler function to set up a scheduled task, using the everyMinute method Specify execution every minute. In the callback function of the scheduled task, we send a POST request to the specified URL to trigger the push message.

3. Use WebSocket
WebSocket is a TCP-based protocol that establishes a persistent connection between the client and the server, enabling real-time communication. Using WebSocket in a PHP application to implement the scheduled message push function requires a WebSocket server and corresponding client.

The following is a sample code that uses WebSocket to implement scheduled message push:

Server-side code:

<?php
 
// 创建WebSocket服务器
$server = new SwooleWebsocketServer('0.0.0.0', 9502);
 
// 设置定时器，每隔1秒执行一次
$server->tick(1000, function () use ($server) {
    // 遍历所有连接，推送消息
    foreach ($server->connections as $fd) {
        $server->push($fd, 'Hello, WebSocket!');
    }
});
 
// 启动WebSocket服务器
$server->start();

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Client-side code:

<!DOCTYPE html>
<html>
<head>
    <title>WebSocket Push</title>
    <script>
        var socket = new WebSocket('ws://localhost:9502');
        socket.onmessage = function (event) {
            console.log(event.data);
        };
    </script>
</head>
<body>
</body>
</html>

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In the above code , we created a WebSocket server and set a timer using the tick method to execute every 1 second. In the timer callback function, we traverse all connections and push messages to the client through the push method. The client uses JavaScript's WebSocket object to establish a connection with the server and receives messages pushed by the server through the onmessage method.

Summary:
This article introduces how to use Swoole, Laravel's push extension, WebSocket, etc. to implement scheduled message push functions in PHP applications. Different extensions are suitable for different scenarios. You can choose the appropriate push method according to your own needs and project characteristics to implement the scheduled message push function. Hope this article can help you!

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