order

@@ -39,7 +39,7 @@ class AdminStatisticsController extends AdminBaseController{
         $start_month="";
         $end_month="";
         for ($i = 0; $i <= 24; $i++){
-            $month[24-$i]=date('Y-m',strtotime(date('Ymd',strtotime("-$i month"))));
+            $month[24-$i]=date('Y-m-d',strtotime(date('Ymd',strtotime("-$i month"))));
         }
         dump($month);