19 06 2023
在PHP中实现WebSocket服务器可以使用Ratchet库。以下是一个简单的示例代码: ```php require 'vendor/autoload.php'; use Ratchet\MessageComponentInterface; use Ratchet\ConnectionInterface; use Ratchet\Server\IoServer; use Ratchet\Http\HttpServer; use Ratchet\WebSocket\WsServer; class WebSocketServer implements MessageComponentInterface { protected $clients; public function __construct() { $this->clients = new \SplObjectStorage(); } public function onOpen(ConnectionInterface $conn) { $this->clients->attach($conn); echo "New connection! ({$conn->resourceId})\n"; } 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); echo "Connection {$conn->resourceId} has disconnected\n"; } public function onError(ConnectionInterface $conn, \Exception $e) { echo "An error has occurred: {$e->getMessage()}\n"; $conn->close(); } } $server = IoServer::factory( new HttpServer( new WsServer( new WebSocketServer() ) ), 8080 ); $server->run(); ``` 这段代码首先引入了Ratchet库,并定义了一个`WebSocketServer`类,实现了`MessageComponentInterface`接口。在`onOpen`方法中,新连接会被记录下来;在`onMessage`方法中,收到的消息会被发送给除发送者以外的所有客户端;在`onClose`方法中,关闭的连接会被移除;在`onError`方法中,错误会被处理。 最后,通过`IoServer`创建一个WebSocket服务器实例,并监听8080端口。 请注意,这只是一个简单的示例代码,你可能需要根据自己的需求进行适当的修改和扩展。
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