tcp_server.php

<?php
$serv = new SocketServer();
$serv->run('0.0.0.0', 9504);

class SocketServer
{
    protected $serv; //swoole server

    const MAX_PACKAGE_LEN = 8000000; //max data accept

    function run($host, $port)
    {
        $this->serv = new Swoole\Server($host, $port, SWOOLE_BASE);

        $this->serv->set(array(
            'enable_coroutine' => false,
            'worker_num' => 1, //how much worker will start
        ));

        $this->serv->on('receive', array($this, 'onReceive'));
        $this->serv->start();
    }

    function onReceive($serv, $fd, $tid, $data)
    {
        echo "recv " . strlen($data) . " bytes\n";
//        $packet = substr($data, 4);
//        $result = array(
//            "code" => "0",
//            "msg" => "ok",
//            "data" => $packet,
//        );
//        $resp = json_encode($result);
//        $send_data = pack('N', strlen($resp)) . $resp;
//        echo "send " . strlen($send_data) . " bytes\n";
//        $serv->send($fd, $send_data);
    }
}