PHP判断两个给定日期是否在同一周的方法

/*** 判断两日期是不是同一周* 星期是按周日到周六*/function getSameWeek($pretime,$aftertime){    $flag = false;//默认不是同一周    $afweek = date('w',$aftertime);//当前是星期几    $mintime = $aftertime - $afweek * 3600*24;//一周开始时间    $maxtime = $aftertime + (7-$afweek)*3600*24;//一周结束时间    if ( $pretime >= $mintime && $pretime <= $maxtime){//同一周      $flag = true;    }    return $flag;}$testWeek_start=strtotime('2017-8-19');$testWeek_end=strtotime('2017-8-23');echo getSameWeek($testWeek_start,$testWeek_end)?'在同一周':'不在同一周';