以下是一个简单的PHP多人对话实例，使用WebSocket技术实现客户端与服务器之间的实时通信。
1. 服务器端代码
```php
// 监听8080端口
$server = new Ratchet""Server""IoServer(
new Ratchet""Http""HttpServer(
new Ratchet""WebSocket""WsServer(
new Ratchet""Wamp""WampServer(
new App""Chat()
)
)
)
);
$server->run();
```
2. WAMP类
```php
namespace App;
use Ratchet""Wamp""WampServer;
use Ratchet""Wamp""Topic;
class Chat extends WampServer
{
protected $clients = [];
public function onOpen($conn)
{
// 将新连接的客户端添加到客户端数组
$this->clients[$conn->resourceId] = $conn;
}
public function onMessage($conn, $msg)
{
// 广播消息给所有客户端
foreach ($this->clients as $client) {
if ($client->resourceId != $conn->resourceId) {
$client->send($msg);
}
}
}
public function onClose($conn)
{
// 移除断开连接的客户端
unset($this->clients[$conn->resourceId]);
}
public function onError($conn, ""Exception $e)
{
// 处理异常
echo "
