Application scenarios of Swoole and Workerman's message subscription and publishing in PHP and MySQL

Swoole and Workerman are two high-performance network communication frameworks based on PHP. They have a wide range of application scenarios in message subscription and publishing. This article will explore the specific applications of Swoole and Workerman in implementing message subscription and publishing in PHP and MySQL, and provide corresponding code examples.

1. Background introduction
In many applications, it is necessary to implement functions such as real-time message push or event monitoring, as well as distributed task scheduling. The traditional PHP development method usually uses polling, which is not only inefficient but also takes up a lot of system resources. Swoole and Workerman can provide high-performance message subscription and publishing functions in an asynchronous and non-blocking manner.

2. Characteristics of Swoole and Workerman

1. Swoole: Swoole is a high-performance network communication engine for the PHP language. It provides a complete set of key features such as asynchronous, coroutine, and multi-threading, and has received widespread attention and application for its high performance and low latency.
2. Workerman: Workerman is an open source PHP asynchronous event-driven library for building high-performance and scalable network applications. It adopts an event-driven approach and provides functions such as TCP/UDP/SCTP server, development framework, load balancing, and asynchronous tasks.

3. Application scenarios of Swoole and Workerman

1. Real-time message push: When there are new messages that need to be pushed to the client, you can use the WebSocket function of Swoole or Workerman. The following is a sample code for using Swoole to implement real-time message push:

<?php
$serv = new swoole_websocket_server("0.0.0.0", 9501);

$serv->on('open', function($serv, $request) {
    echo "client connected
";
});

$serv->on('message', function($serv, $frame) {
    foreach ($serv->connections as $fd) {
        $serv->push($fd, $frame->data);
    }
});

$serv->on('close', function($serv, $fd) {
    echo "client closed
";
});

$serv->start();

2. Event monitoring: When an event occurs, you can use Swoole and Workerman to listen and process the corresponding event. The following is a sample code that uses Workerman to implement event monitoring:

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

use WorkermanWorker;

$worker = new Worker();
$worker->onWorkerStart = function($worker) {
    $worker->onMessage = function($connection, $data) {
        // 处理事件
        echo "event happened: " . $data . "
";
    };
};

Worker::runAll();

4. Application of Swoole and Workerman combined with MySQL
In addition to applications in network communication, Swoole and Workerman can also be used with MySQL The database is combined to realize the functions of message subscription and publishing. The following is a sample code that uses Swoole and MySQL to implement message subscription and publishing:

<?php
$server = new SwooleServer('0.0.0.0', 9501, SWOOLE_BASE);

$server->on('receive', function ($server, $fd, $from_id, $data) {
    $conn = new mysqli('localhost', 'username', 'password', 'database');
    if ($conn->connect_error) {
        echo "MySQL Connection Error: " . $conn->connect_error . "
";
        return;
    }

    // 消息入队
    $insert_sql = "INSERT INTO message_queue (message) VALUES ('$data')";
    $conn->query($insert_sql);

    $conn->close();
});

$server->on('workerStart', function ($server, $worker_id) {
    if ($worker_id === 0) {
        // 消息出队
        $timer = SwooleTimer::tick(1000, function () {
            $conn = new mysqli('localhost', 'username', 'password', 'database');
            if ($conn->connect_error) {
                echo "MySQL Connection Error: " . $conn->connect_error . "
";
                return;
            }

            $query_sql = "SELECT message FROM message_queue LIMIT 1";
            $result = $conn->query($query_sql);
            if ($result && $result->num_rows > 0) {
                $row = $result->fetch_assoc();
                // 处理消息
                echo "Processing message: " . $row['message'] . "
";
                // 消息出队
                $delete_sql = "DELETE FROM message_queue WHERE message = '" . $row['message'] . "'";
                $conn->query($delete_sql);
            }

            $conn->close();
        });
    }
});

$server->start();

In the above code, the message enqueue and dequeue operations are implemented through Swoole's message queue, thereby realizing message subscription and publishing. function.

Summary:
Whether it is in terms of real-time message push or event monitoring, Swoole and Workerman provide high-performance solutions. By combining with MySQL database, more complex application scenarios can be realized. I hope that through the introduction and sample code of this article, readers can have a clearer understanding of Swoole and Workerman's implementation of message subscription and publishing in PHP and MySQL.

The above is the detailed content of Application scenarios of Swoole and Workerman's message subscription and publishing in PHP and MySQL. For more information, please follow other related articles on the PHP Chinese website!