php实时推送系统消息给客户端的原理及详解

<?php
new class
{
    private $_serv = null;
    public function __construct()
    {
        $this->_serv = new swoole_websocket_server('0.0.0.0', 6552);
        $this->_serv->set(array(
            'worker_num'      => 2,
            'dispatch_mode'   => 3,
        'log_file' => 'swoole.log',
        ));
　　//增加个监听端口
    $udpworker =  $this->_serv->listen("127.0.0.1", 6553, SWOOLE_SOCK_UDP);
    $udpworker->on('Packet', function ($serv, $data, $addr) {
            $data = json_decode($data, true);
            if(!empty($data)){
                //你的业务逻辑
            }
        });
        $this->_serv->on('open', array($this, 'onStart'));
        $this->_serv->on('message', array($this, 'onMessage'));
        $this->_serv->on('close', array($this, 'onClose'));
        $this->_serv->start();
    }
   
    public function onStart($serv, $request)
    {
        echo "server: connect success with fd {$request->fd}\n";
    }
    //format:'{"school_class_id":"1","school_id":"2"}'
    public function onMessage($serv, $frame)
    {
　　　　/**start*你的业务逻辑***/
    }
    public function onClose($serv, $fd)
    {
        echo "client {$fd} closed\n";
    }
}
?>