xyzshop/helper/event_looper.php

<?php
/**
 * Created by PhpStorm.
 * User: stanley-king
 * Date: 2017/12/14
 * Time: 下午2:28
 */

require_once(BASE_ROOT_PATH . '/helper/event/IProcessor.php');
require_once(BASE_ROOT_PATH . '/helper/event/event_looper.php');
require_once(BASE_ROOT_PATH . '/helper/event/buffer_looper.php');

class process_looper extends event\buffer_looper
{
    private static $stInstance;
    public static function instance()
    {
        if(self::$stInstance == null) {
            self::$stInstance = new process_looper();
        }
        return self::$stInstance;
    }
}