严谨写法

app/logic/Zone.php

@@ -23,12 +23,14 @@ class Zone
     {
 
         $userModel = User::field('balance')->find($user_id);
-        $balance = $userModel['balance'];
+        $balance = $userModel['balance'] ?: 0;
 
         $zoneGoodsModel = ZoneGoods::field('price')->find($zoneGoodsId);
-        $price = $zoneGoodsModel['price'];
-
-        return $balance < $price;
+        $price = $zoneGoodsModel['price'] ?: 0;
+        if ($balance < $price) {
+            return false;
+        }
+        return true;
     }
 
     /**