public static function getfeedate($now, $n)
 {
     $diff = strtotime($now) + $n * 86400;
     $dayweek = date("w", $diff);
     if ($dayweek == "6") {
         $res = date("Y-m-d", $diff + 172800);
     } elseif ($dayweek == "0") {
         $res = date("Y-m-d", $diff + 86400);
     } else {
         $res = date("Y-m-d", $diff);
         $computeWeek = GetPayCalcuInfo::computeWeek($now, $res);
         if ($computeWeek > 0) {
             $res = strtotime($res) + $computeWeek * 172800;
             $dayweek2 = date("w", $res);
             if ($dayweek2 == "6") {
                 $res = date("Y-m-d", $res + 172800);
             } elseif ($dayweek2 == "0") {
                 $res = date("Y-m-d", $res + 86400);
             } else {
                 $res = date("Y-m-d", $res);
             }
         } else {
             $res = date("Y-m-d", $diff);
         }
     }
     //echo $res;
     return $res;
 }