swoole 定时器

<?PHP
/**
 * Created by PHPStorm.
 * Date: 2019/10/30
 * Time: 9:54
 */
namespace app\index\controller;

use think\swoole\Server;

class Swoole extends Server
{
    protected $host = '0.0.0.0';
    protected $port = 9502;
    protected $serverType = 'socket';
    protected $option = [
        'worker_num'=> 4,
        'daemonize'    => false,
        'backlog'  => 128,
    ];


    public function onConnect($serv, $fd)
    {
        echo "server: handshake success with fd{$fd}\n";
    }

    public function onRequest($request, $response)
    {

    }

    public function onMessage($server, $frame)
    {
         $info = db('sys_config')->find();
         dump($info);
　　　　　//定时器
        $this->tick(2000, function ($id) use ($server,$frame) {
            $server->push($frame->fd, "this is server");
        });

    }

   

    public function onReceive($server, $fd, $from_id, $data)
    {
        $server->send($fd, 'Swoole: '.$data);
    }

    public function onClose($serv, $fd)
    {

    }


}