Title: new Undefined Variables showing up: $is_folder, $is_external
Last modified: March 30, 2026

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# new Undefined Variables showing up: $is_folder, $is_external

 *  Resolved [WebDragon](https://wordpress.org/support/users/webdragon/)
 * (@webdragon)
 * [1 week, 1 day ago](https://wordpress.org/support/topic/new-undefined-variables-showing-up-is_folder-is_external/)
 * recently did a quick scan of logs while updating our php version and noticed 
   other additional “undefined variable” warnings spamming the logs from even before
   that php update,
 * `[30-Mar-2026 15:21:39 UTC] PHP Warning: Undefined variable $is_folder in /home/
   customer/www/REDACTED/public_html/wp-content/plugins/filr-protection/src/class-
   filr-shortcode.php on line 297
   [30-Mar-2026 15:21:39 UTC] PHP Warning: Undefined
   variable $is_external in /home/customer/www/REDACTED/public_html/wp-content/plugins/
   filr-protection/src/class-filr-shortcode.php on line 297[30-Mar-2026 15:22:08
   UTC] PHP Warning: Undefined variable $is_folder in /home/customer/www/REDACTED/
   public_html/wp-content/plugins/filr-protection/src/class-filr-shortcode.php on
   line 297[30-Mar-2026 15:22:08 UTC] PHP Warning: Undefined variable $is_external
   in /home/customer/www/REDACTED/public_html/wp-content/plugins/filr-protection/
   src/class-filr-shortcode.php on line 297ad infinitum

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Author [Teo Alex](https://wordpress.org/support/users/altesin/)
 * (@altesin)
 * [1 week ago](https://wordpress.org/support/topic/new-undefined-variables-showing-up-is_folder-is_external/#post-18867854)
 * Hello [@webdragon](https://wordpress.org/support/users/webdragon/) ,
 * We’ve identified the issue, and a fix will be available in the next update.
 * Thank you.
 *  Thread Starter [WebDragon](https://wordpress.org/support/users/webdragon/)
 * (@webdragon)
 * [6 days, 12 hours ago](https://wordpress.org/support/topic/new-undefined-variables-showing-up-is_folder-is_external/#post-18869123)
 * Thanks! I’ll keep my eyes peeled for it.

Viewing 2 replies - 1 through 2 (of 2 total)

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 * 2 replies
 * 2 participants
 * Last reply from: [WebDragon](https://wordpress.org/support/users/webdragon/)
 * Last activity: [6 days, 12 hours ago](https://wordpress.org/support/topic/new-undefined-variables-showing-up-is_folder-is_external/#post-18869123)
 * Status: resolved