PHP和WebSocket: 实现实时数据更新的最佳方法

composer require cboden/ratchet

use RatchetMessageComponentInterface;
use RatchetConnectionInterface;

class MyWebSocketServer 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})
";
    }

    public function onMessage(ConnectionInterface $from, $msg)
    {
        // 处理接收到的数据
        // ...

        // 发送数据到所有连接的客户端
        foreach ($this->clients as $client) {
            $client->send($msg);
        }
    }

    public function onClose(ConnectionInterface $conn)
    {
        $this->clients->detach($conn);
        echo "Connection {$conn->resourceId} has disconnected
";
    }

    public function onError(ConnectionInterface $conn, Exception $e)
    {
        echo "An error has occurred: {$e->getMessage()}
";
        $conn->close();
    }
}

use RatchetHttphttpserver;
use RatchetWebSocketWsServer;
use RatchetServeriOServer;

require dirname(__DIR__) . '/vendor/autoload.php';

$server = IoServer::factory(
    new HttpServer(
        new WsServer(
            new MyWebSocketServer()
        )
    ),
    8080
);

$server->run();

// 在服务器端代码中
$msg = json_encode(['message' => 'Hello, client!']);
foreach ($this->clients as $client) {
    $client->send($msg);
}