add

application/Admin/Controller/WelfareController.class.php

@@ -45,7 +45,7 @@ class WelfareController extends AdminbaseController
                     $a = M("welfare_rate")->where("id=1");
                     $a->price = $price;
                     $b = $a->save();
-                    var_dump($b);
+                    var_dump($check);
                     die;
                 }
             }