1.在/web/tool/demo/server下新建tcp.php
```
<?php
//創建Server對象，監聽 127.0.0.1:9501端口
$serv = new swoole_server("127.0.0.1", 9501);
$serv->set([
'worker_num' => 4 , // worker進程數 cpu 1-4,ps aft|grep tcp.php驗證是否開啟
'max_request' => 10000,
]);
//監聽連接進入事件
/**
* $fd 客戶端連接的唯一標示
* $reactor_id 線程id
*/
$serv->on('connect', function ($serv, $fd, $reactor_id) {
echo "Client: {$reactor_id} - {$fd}-Connect.\n";
});
//監聽數據接收事件
$serv->on('receive', function ($serv, $fd, $reactor_id, $data) {
$serv->send($fd, "Server: {$reactor_id} - {$fd}".$data);
});
//監聽連接關閉事件
$serv->on('close', function ($serv, $fd) {
echo "Client: Close.\n";
});
//啟動服務器
$serv->start();
```
2.啟動服務
```
cd /web/tool/demo/server
php tcp.php
```
3.新建終端查看端口9501
```
netstat -anp | grep 9501
補充
關掉端口
kill 1328
```
4.新建終端連接9501
```
telnet 127.0.0.1 9501
```
可以看到響應如下
再開啟一個終端測試
