swooleTCP

1:先创建服务端文件

TCP.php

<?php

class TCP
{
private $server = null;

public function __construct(){
$this -> server = new Swoole\Server('127.0.0.1', 9501);
$this -> server -> set([
"worker_num" => 4,
"max_request" => 50,
]);
$this -> server -> on('Connect', [$this, "onConnect"]);
$this -> server -> on('Receive', [$this, "onReceive"]);
$this -> server -> on('Close', [$this, "onClose"]);
$this -> server -> start();
}
/**
* $fd 客户端链进来的id:0/开始增长
*
*/
public function onConnect($server, $fd){
echo "客户端id: {$fd}链接.\n";
}

public function onReceive($server, $fd, $reactor_id, $data){
$server->send($fd, "发送的数据: {$data}");
}

public function onClose($server, $fd){
echo "客户端id: {$fd}关闭.\n";
}
}

new TCP();

2：创建客户端文件 TCP.php 

<?php

// use Swoole\Coroutine\Client;
// use function Swoole\Coroutine\run;

go(function () {
    $client = new Swoole\Coroutine\Client(SWOOLE_SOCK_TCP);
    if (!$client->connect('127.0.0.1', 9501, 0.5))
    {
        echo "connect failed. Error: {$client->errCode}\n";
    }
    // fwrite(STDOUT,"请输入：");
    // $res = fgetc(STDIN);
    // $client->send($res);
    $client->send("你好!");
    echo $client->recv();
    $client->close();
});

3：打开两个终端执行服务端文件跟客户端文件php TCP.php 回车，就建立成功了