记录01 php获取周的第一天与最后一天

function getWeekDay($date)
{
    $time = strtotime($date);
    $week = date('N', $time); //1-7 1周一 7周日
    $firstDay = $week - 1;
    $endDay = 7 - $week;

    return [
        date('Y-m-d', strtotime("- $firstDay day", $time)),
        date('Y-m-d', strtotime("+ $endDay day", $time))
    ];
}

var_dump(getWeekDay('2023-05-31'));

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