$time = time(); $n = intval(date('N', $time));// 1-7 monday-sunday echo '今日:'.date('Y-m-d (N)', $time).PHP_EOL; echo '上週一:'.date('Y-m-d (N)', $time-(6+$n)*24*60*60).PHP_EOL; echo '下週六:'.date('Y-m-d (N)', $time+(7-$n+6)*24*60*60).PHP_EOL; echo '上週一:'.date('Y-m-d (N)', strtotime('monday last week')).PHP_EOL; echo '下週六:'.date('Y-m-d (N)', strtotime('saturday next week')).PHP_EOL;