//获取给定时间的周日时间或月末时间或每天    private function endDate ($time, $type = 1, $openTime = '20:00:00')    {        if ($type == 1) {            return date('Y-m-d ' . $openTime, $time);        } elseif ($type == 2) {            $w = strftime('%u', $time);//获取是周几的数字1-7            return date('Y-m-d ' . $openTime, $time + (7 - $w) * 24 * 60 * 60);        } elseif ($type == 3) {            $t = date('t', $time);//获取给定日期月末是几号，数字            return date('Y-m-' . $t . ' ' . $openTime, $time);        }        return '';    }