判断是否为空优化

app/admin/controller/OrderImport.php

@@ -155,7 +155,7 @@ class OrderImport extends Base
                 ->order('ce.addtime', 'desc')
                 ->find();
 
-            if (empty($user_update)) $res['user_update'] = $res['confirm'];
+            if ($user_update->isEmpty()) $res['user_update'] = $res['confirm'];
             else $res['user_update'] = array_merge($res['confirm'], $user_update);
 
             return app_show(0, '请求成功', $res);