退订邮件功能

application/common.php

@@ -772,7 +772,7 @@ function add_usermsg($userid, $content, $url)
     return $msg_obj->insert($msgdata);
 }
 
-function jsonSuccess($data)
+function jsonSuccess($data=[])
 {
     return json(['code' => 0, 'msg' => 'success', 'data' => $data]);
 }