PHP调用Workerman5.0实现一对一聊天

2个月前发布

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1. 安装 Workerman

首先，确保你已经安装了 Workerman。可以通过 Composer 安装：

composer require workerman/workerman

2. 后端代码

创建一个 PHP 文件（例如 chat_server.php），用于处理 WebSocket 连接和消息传递。

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

use Workerman\Worker;
use Workerman\Connection\TcpConnection;

// 创建一个 WebSocket 服务器
$ws_worker = new Worker("websocket://0.0.0.0:2346");

// 保存用户连接的数组
$users = [];

// 当有客户端连接时
$ws_worker->onConnect = function(TcpConnection $connection) use (&$users) {
    echo "New connection\n";
};

// 当有客户端发送消息时
$ws_worker->onMessage = function(TcpConnection $connection, $data) use (&$users) {
    $message = json_decode($data, true);

    if (isset($message['type'])) {
        switch ($message['type']) {
            case 'login':
                // 用户登录，保存连接
                $users[$message['user_id']] = $connection;
                $connection->user_id = $message['user_id'];
                echo "User {$message['user_id']} logged in\n";
                break;

            case 'chat':
                // 一对一聊天
                if (isset($users[$message['to_user_id']])) {
                    $users[$message['to_user_id']]->send(json_encode([
                        'type' => 'chat',
                        'from_user_id' => $connection->user_id,
                        'message' => $message['message']
                    ));
                }
                break;
        }
    }
};

// 当客户端断开连接时
$ws_worker->onClose = function(TcpConnection $connection) use (&$users) {
    if (isset($connection->user_id)) {
        unset($users[$connection->user_id]);
        echo "User {$connection->user_id} disconnected\n";
    }
};

// 运行 worker
Worker::runAll();

3. 前端代码

在前端，使用 WebSocket 连接到服务器，并实现登录和发送消息的功能。

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>WebSocket Chat</title>
</head>
<body>
    <div>
        <input type="text" id="user_id" placeholder="Your User ID">
        <button onclick="login()">Login</button>
    </div>
    <div>
        <input type="text" id="to_user_id" placeholder="To User ID">
        <input type="text" id="message" placeholder="Message">
        <button onclick="sendMessage()">Send</button>
    </div>
    <div id="chat"></div>

    <script>
        let ws;
        let user_id;

        function login() {
            user_id = document.getElementById('user_id').value;
            ws = new WebSocket('ws://127.0.0.1:2346');

            ws.onopen = function() {
                ws.send(JSON.stringify({
                    type: 'login',
                    user_id: user_id
                }));
            };

            ws.onmessage = function(event) {
                const message = JSON.parse(event.data);
                if (message.type === 'chat') {
                    document.getElementById('chat').innerHTML += `<p>From ${message.from_user_id}: ${message.message}</p>`;
                }
            };
        }

        function sendMessage() {
            const to_user_id = document.getElementById('to_user_id').value;
            const message = document.getElementById('message').value;
            ws.send(JSON.stringify({
                type: 'chat',
                to_user_id: to_user_id,
                message: message
            }));
        }
    </script>
</body>
</html>