PHP-获取上周一周的日期

$start1 = date("Y-m-d", strtotime('monday last week'));
$end1   = date("Y-m-d", strtotime('monday this week - 1 days'));

$start2 = date("Y-m-d", strtotime('monday -3 week'));
$end2   = date("Y-m-d", strtotime('monday -2 week - 1 days'));

$start3 = date("Y-m-d", strtotime('monday -4 week'));
$end3   = date("Y-m-d", strtotime('monday -3 week - 1 days'));

$start4 = date("Y-m-d", strtotime('monday -5 week'));
$end4   = date("Y-m-d", strtotime('monday -4 week - 1 days'));


echo " 1： $start4\n";
echo " ： $end4\n";
die;

上个月：

$start = date(“Ym01”, strtotime(“last month”));
$end = date(“Ym01”);