Title: front-end-output.php
Last modified: October 31, 2022

---

# front-end-output.php

 *  [bkjproductions](https://wordpress.org/support/users/bkjproductions/)
 * (@bkjproductions)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/front-end-output-php/)
 * Getting this warning in PHP, after updating to PHP 8:
 *     ```
       Undefined array key "google_analytics_id" in 
       /tag-manager-header-body-footer/include/front-end-output.php on line 69
       Undefined array key "yandex_metrika_id" in 
       /tag-manager-header-body-footer/include/front-end-output.php on line 70
       ```
   
 * Using WP6.0 and plugin version 3.0.0
 * Interestingly, we are only using this in the **footer**.
    As a test, I put in
   an HTML comment in the **header **area, and the warning disappeared. Then I removed
   the HTML comment in the header area, and the warning disappears.
 * So I suspect this happens on a narrow use-case, if you are not putting something
   in the header area, initially.

Viewing 1 replies (of 1 total)

 *  [apriloneil2000](https://wordpress.org/support/users/apriloneil2000/)
 * (@apriloneil2000)
 * [3 years, 7 months ago](https://wordpress.org/support/topic/front-end-output-php/#post-16177430)
 * This is what you post about?

Viewing 1 replies (of 1 total)

The topic ‘front-end-output.php’ is closed to new replies.

 * ![](https://ps.w.org/tag-manager-header-body-footer/assets/icon-256x256.png?rev
   =2176667)
 * [Tag Manager - Header, Body And Footer](https://wordpress.org/plugins/tag-manager-header-body-footer/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/tag-manager-header-body-footer/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/tag-manager-header-body-footer/)
 * [Active Topics](https://wordpress.org/support/plugin/tag-manager-header-body-footer/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/tag-manager-header-body-footer/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/tag-manager-header-body-footer/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [apriloneil2000](https://wordpress.org/support/users/apriloneil2000/)
 * Last activity: [3 years, 7 months ago](https://wordpress.org/support/topic/front-end-output-php/#post-16177430)
 * Status: not resolved