修改意见

@@ -83,6 +83,7 @@ class AdminSignController extends AdminBaseController
         $param['night_sign_end_time']=strtotime($param['night_sign_end_time']);
         $param['sleep_sign_time']=strtotime($param['sleep_sign_time']);
         $param['sleep_sign_end_time']=strtotime($param['sleep_sign_end_time']);
+        $param=array_filter($param);
         Db::name('config')->where('id',1)->update($param);
         $this->success('编辑成功');
     }