swoole 定时器 swoole_time_tick 和 swoole_time_after

<?php

class myticker
{
    public $server = null;
    CONST host = '127.0.0.1';
    CONST port = 9502;
    public function __construct()
    {
        $this->server = new swoole_websocket_server(myticker::host,myticker::port);
        $this->server->on('open',[$this,'onopen']);
        $this->server->on('message',[$this,'onmessage']);
        $this->server->on('close',[$this,'onclose']);

        $this->server->start();
    }
    public function onopen($serv,$request)
    {
        echo "接通！来自{$request->fd}的问候\n";
        if ($request->fd==2)
        {
            swoole_timer_tick(3000,function($timer_id)
            {
                //swoole_timer_tick 表示每几秒执行一次操作，第一个参数精确到毫秒
                //回调函数中的$timer_id用来标注识别定时器ID，这一定时器id还用于time::clear()清楚定时器
                //回调函数中还可使用其他参数，只不过是可选的
                echo "3秒后，{$timer_id}开始执行\n";
            });
        }
    }

    public function onmessage($serv,$frame)
    {
        echo "接到来自客户句柄----{$frame->fd}的问候，其操作类型为--{$frame->opcode},数据帧的完整状态{$frame->finish}\n";
        swoole_timer_after(5000,function() use($serv,$frame){
            echo "5秒后,返回客户端{$frame->fd}的数据{$frame->data}\n";
            $serv->push("推送到达的时间".date('Y-m-d H:i:s')."\n");
        });
        $serv->push($frame->fd,$frame->data);
    }
    public function onclose($serv,$fd)
    {
        echo "关闭来自{$fd}的连接\n";
    }
}
$cpc=new myticker();
?>