/*

* 获取某星期的开始时间和结束时间 * time 时间 * first 表示每周星期一为开始日期 0表示每周日为开始日期

*/

function getWeek($time = '', $first = 1)

{

    //当前日期

    if (!$time) $time = time();

    $date = date("Y-m-d", $time);

    //$first =1 表示每周星期一为开始日期 0表示每周日为开始日期

    //获取当前周的第几天 周日是 0 周一到周六是1 - 6

    $w = date('w', strtotime($date));

    //获取本周开始日期，如果$w是0，则表示周日，减去 6 天

    $week_start = date('Y-m-d', strtotime("$date -" . ($w ? $w - $first : 6) . ' days'));

    //本周结束日期

    $week_end = date('Y-m-d', strtotime("$week_start +6 days"));

    return array("week_start" => $week_start, "week_end" => $week_end);

}

/*

* 获取某一时间上周开始时间与结束时间 * time 时间

*/

function getLastWeek($time = '')

{

    //当前日期

    if (!$time) $time = time();

    if (date('l',$time) == 'Monday') {

        $week_start = date('Y-m-d',strtotime('last monday',$time));

    }else{

        $week_start = date('Y-m-d',strtotime('-1 week last monday',$time));

     }

    $week_end = date('Y-m-d',strtotime('last sunday',$time));

    return array("week_start" => $week_start, "week_end" => $week_end);

}