不叠加  叠加 开启会员折扣叠加后，例如100元课程，VIP会员折扣8折，如果此时限时折扣6折，那会员实际支付就是100元x80%x60%=48元

{php echo tpl_form_field_daterange('time', array('starttime'=>$starttime,'endtime'=> $endtime), true);}

排序越大，活动越靠前

{$_W['siteroot']}app/{php echo str_replace("./", "", $this->createMobileUrl('discount', array('discount_id'=>$discount_id)));}

{$setting_pc['site_root']}{$uniacid}/discount.html?discount_id={$discount_id}