PHP获取自然周日期（周一~周日）

使用date()函数：PHP: date - Manual

$time = time(); // 可设定日期
 
$week_day_num = date('w', $time);
if ($week_day_num == 0) {
    // 当前是周日的情况
    $sdate = date('Y-m-d', strtotime("-6 day", $time));
    $edate = date('Y-m-d', $time);
} else {
    $sdate = date('Y-m-d', strtotime("-" . ($week_day_num - 1) . " day", $time));
    $edate = date('Y-m-d', strtotime("+" . (7 - $week_day_num) . " day", $time));
}

 $sdate：周一日期；$edate：周日日期