使用PHP实现实时聊天功能的技术架构分析

var socket = new WebSocket('ws://example.com/chat');

socket.onopen = function() {
  console.log('WebSocket连接已建立');
};

socket.onmessage = function(event) {
  console.log('收到消息：' + event.data);
};

socket.onclose = function() {
  console.log('WebSocket连接已关闭');
};

function sendMessage(message) {
  socket.send(message);
}

use RatchetMessageComponentInterface;
use RatchetConnectionInterface;

class Chat implements MessageComponentInterface {
  protected $connections;

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

  public function onOpen(ConnectionInterface $conn) {
    $this->connections->attach($conn);
    echo "新的WebSocket连接建立
";
  }

  public function onMessage(ConnectionInterface $from, $message) {
    foreach ($this->connections as $connection) {
      $connection->send($message);
    }
  }

  public function onClose(ConnectionInterface $conn) {
    $this->connections->detach($conn);
    echo "WebSocket连接关闭
";
  }

  public function onError(ConnectionInterface $conn, Exception $e) {
    echo "WebSocket连接出错：{$e->getMessage()}
";
    $conn->close();
  }
}