Title: Undefined index: HTTP_REFERER
Last modified: August 22, 2016

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# Undefined index: HTTP_REFERER

 *  Resolved [massimod](https://wordpress.org/support/users/massimod/)
 * (@massimod)
 * [11 years, 6 months ago](https://wordpress.org/support/topic/undefined-index-http_referer/)
 * Undefined index: HTTP_REFERER in /home/wp-content/plugins/wp-advertize-it/classes/
   wp-advertize-it.php on line 401
 * While this is a notice/warning, i would like to ask what does the HTTP+REFERER
   has to do with Ads blocks (Adsense in my case) ?
 * Disabling the ads also continue to show the notice. Strange.
 * Thanks
 * [https://wordpress.org/plugins/wp-advertize-it/](https://wordpress.org/plugins/wp-advertize-it/)

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [benohead](https://wordpress.org/support/users/benohead/)
 * (@benohead)
 * [11 years, 6 months ago](https://wordpress.org/support/topic/undefined-index-http_referer/#post-5535508)
 * There is a setting to disable ads based on the HTTP referrer. This is the reason
   why I read the HTTP_REFERER. But of course, it’s not intended that a warning 
   is displayed in strict mode. I’ll fix it tonight an push an update.
 *  Thread Starter [massimod](https://wordpress.org/support/users/massimod/)
 * (@massimod)
 * [11 years, 6 months ago](https://wordpress.org/support/topic/undefined-index-http_referer/#post-5535727)
 * Ok, but why since i have no blocks added (with the widget), the error appears?
 * Strange isn’t it ?
 *  Plugin Author [benohead](https://wordpress.org/support/users/benohead/)
 * (@benohead)
 * [11 years, 6 months ago](https://wordpress.org/support/topic/undefined-index-http_referer/#post-5535729)
 * The warning should be gone in the new version I’ve uploaded earlier today.
 * You get it even though no block is configured because it first checks for rules
   which disable ads and then checks whether it needs to insert an add in the post.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Undefined index: HTTP_REFERER’ is closed to new replies.

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 * 3 replies
 * 2 participants
 * Last reply from: [benohead](https://wordpress.org/support/users/benohead/)
 * Last activity: [11 years, 6 months ago](https://wordpress.org/support/topic/undefined-index-http_referer/#post-5535729)
 * Status: resolved