product_id to productId

@@ -106,7 +106,7 @@ class ItemData
     {
         $param = Yohobuy::param();
         $param['method'] = 'show.productShareOrderList';
-        $param['product_id'] = $productId;
+        $param['productId'] = $productId;
         $param['page'] = $pageNum;
         $param['limit'] = $pageSize;
         $param['client_secret'] = Sign::getSign($param);