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php websocket实现推送

2026-03-13 13:04:24PHP

PHP WebSocket 实现推送的方法

使用 Ratchet 库实现 WebSocket 服务

Ratchet 是一个流行的 PHP WebSocket 库，可以轻松实现实时通信功能。安装 Ratchet 可以通过 Composer 完成：

composer require cboden/ratchet

创建一个简单的 WebSocket 服务器：

<?php
use Ratchet\MessageComponentInterface;
use Ratchet\ConnectionInterface;
use Ratchet\Server\IoServer;
use Ratchet\Http\HttpServer;
use Ratchet\WebSocket\WsServer;

class MyWebSocket implements MessageComponentInterface {
    protected $clients;

    public function __construct() {
        $this->clients = new \SplObjectStorage;
    }

    public function onOpen(ConnectionInterface $conn) {
        $this->clients->attach($conn);
    }

    public function onMessage(ConnectionInterface $from, $msg) {
        foreach ($this->clients as $client) {
            if ($client !== $from) {
                $client->send($msg);
            }
        }
    }

    public function onClose(ConnectionInterface $conn) {
        $this->clients->detach($conn);
    }

    public function onError(ConnectionInterface $conn, \Exception $e) {
        $conn->close();
    }
}

$server = IoServer::factory(
    new HttpServer(
        new WsServer(
            new MyWebSocket()
        )
    ),
    8080
);
$server->run();

客户端连接 WebSocket

在 HTML 页面中使用 JavaScript 连接 WebSocket 服务器：

<script>
const socket = new WebSocket('ws://localhost:8080');
socket.onopen = function(e) {
    console.log('WebSocket 连接已建立');
};
socket.onmessage = function(event) {
    console.log('收到消息: ' + event.data);
};
socket.onclose = function(event) {
    console.log('WebSocket 连接已关闭');
};
function sendMessage() {
    const message = document.getElementById('message').value;
    socket.send(message);
}
</script>
<input type="text" id="message" placeholder="输入消息">
<button onclick="sendMessage()">发送</button>

使用 Swoole 实现高性能 WebSocket

Swoole 是一个高性能 PHP 协程框架，适合构建高并发的 WebSocket 服务。安装 Swoole：

pecl install swoole

创建 Swoole WebSocket 服务器：

<?php
$server = new Swoole\WebSocket\Server("0.0.0.0", 9501);

$server->on('open', function (Swoole\WebSocket\Server $server, $request) {
    echo "新连接: fd{$request->fd}\n";
});

$server->on('message', function (Swoole\WebSocket\Server $server, $frame) {
    echo "收到消息: {$frame->data}\n";
    foreach ($server->connections as $fd) {
        if ($fd !== $frame->fd) {
            $server->push($fd, $frame->data);
        }
    }
});

$server->on('close', function ($server, $fd) {
    echo "连接关闭: fd{$fd}\n";
});

$server->start();

使用 Workerman 实现 WebSocket

Workerman 是另一个高性能 PHP Socket 框架。安装 Workerman：

composer require workerman/workerman

创建 Workerman WebSocket 服务器：

<?php
require_once __DIR__ . '/vendor/autoload.php';
use Workerman\Worker;

$ws_worker = new Worker("websocket://0.0.0.0:2346");
$ws_worker->count = 4;

$ws_worker->onConnect = function($connection) {
    echo "新连接\n";
};

$ws_worker->onMessage = function($connection, $data) use ($ws_worker) {
    foreach($ws_worker->connections as $client) {
        if($client !== $connection) {
            $client->send($data);
        }
    }
};

$ws_worker->onClose = function($connection) {
    echo "连接关闭\n";
};

Worker::runAll();

Nginx 反向代理 WebSocket

在生产环境中，通常需要通过 Nginx 反向代理 WebSocket 连接：

server {
    listen 80;
    server_name example.com;

    location /ws {
        proxy_pass http://127.0.0.1:8080;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
    }
}