``` <?php //创建Server对象，监听 127.0.0.1:9501 端口 $server = new Swoole\Server('127.0.0.1', 9501); //监听连接进入事件 $server->on('Connect', function ($server, $fd) { echo "Client: Connect.\n"; }); //监听数据接收事件 $server->on('Receive', function ($server, $fd, $reactor_id, $data) { $server->send($fd, "Server: {$data}"); }); //监听连接关闭事件 $server->on('Close', function ($server, $fd) { echo "Client: Close.\n"; }); //启动服务器 $server->start(); ``` ``` telnet 127.0.0.1 9501 hello Server: hello ``` 参考：https://wiki.swoole.com/#/start/start_tcp_server