修改开关不能改变手机号的bug

@@ -145,7 +145,7 @@ class User extends Backend
     }
 
     /**
-     * 修改
+     *  批量修改
      */
     public function multi($ids = NULL){
         if (!$this->request->isPost()) {
@@ -174,6 +174,7 @@ class User extends Backend
         try {
             $list = $this->model->where($this->model->getPk(), 'in', $ids)->select();
             foreach ($list as $item) {
+                //注意：修改区域！！！！！！！！！！！！
                 if ($values['is_teach'] == 1) {
                     $values['teach_phone'] = $item['mobile'];
                 } else if ($values['is_teach'] == 0){