Notice: Undefined index: HTTP_REFERER

Hi.
This looks like a great plugin, but when I installed it I very often get this error:

Notice: Undefined index: HTTP_REFERER in ...../wp-content/plugins/geographical-redirect/geo-redirect.php on line 37

Note: I run WordPress 5.0.3.

I looked at that line and it says:
$this->referer = $_SERVER['HTTP_REFERER'];

In order to remove it I changed to:
$this->referer = isset($_SERVER['HTTP_REFERER']) && !empty($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '';

I wanted to ask you if this change impacts other functionality.
Otherwise, if you want and think it’s useful, you can add it in a next plugin update.

Thank you for your answer.

• This topic was modified 5 years, 9 months ago by somedeveloper.