``` $begin_time = strtotime(date("Y-m-d", strtotime("-1 week +1 day", $end_time))); // 本周星期一日期时间戳 date("Y-m-d", strtotime("-1 week +1 day", $end_time)); // 本周星期一日期 date("Y-m-d", strtotime("-1 week", $end_time)); // 上一周星期日日期 strtotime(date("Y-m-d", strtotime("-1 week", $end_time)));// 上一周星期日日期时间戳 $last_begin_time = strtotime(date("Y-m-d", strtotime("-2 week +1 day", $end_time))); // $last_time = date("Y-m-d", strtotime("-2 week +1 day", $end_time)); //上一周星期一日期 // $last_time = date("Y-m-d", strtotime("-1 week +1 day", $end_time)); // 本周星期一日期 // $last_time = date("Y-m-d",strtotime("+1 week")); // 下一周星期日日期 ```