Title: Invalid functions
Last modified: August 31, 2016

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# Invalid functions

 *  Resolved [polecat](https://wordpress.org/support/users/polecat/)
 * (@polecat)
 * [10 years ago](https://wordpress.org/support/topic/invalid-functions/)
 * Error on line 58 of cat-posts.php
 * [https://wordpress.org/plugins/category-posts/](https://wordpress.org/plugins/category-posts/)

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Plugin Author [Daniel Floeter](https://wordpress.org/support/users/kometschuh/)
 * (@kometschuh)
 * [10 years ago](https://wordpress.org/support/topic/invalid-functions/#post-7370269)
 * You have a older PHP version installed. It’s known and we drscriped it here: 
   [https://wordpress.org/plugins/category-posts/faq/](https://wordpress.org/plugins/category-posts/faq/)
 *  Thread Starter [polecat](https://wordpress.org/support/users/polecat/)
 * (@polecat)
 * [10 years ago](https://wordpress.org/support/topic/invalid-functions/#post-7370275)
 * Perfect!!! 🙂
 *  [L O Lawson](https://wordpress.org/support/users/l-o-lawson/)
 * (@l-o-lawson)
 * [10 years ago](https://wordpress.org/support/topic/invalid-functions/#post-7370519)
 * I’m receiving this same error on a system running php v5.4.45
 *  Plugin Author [Daniel Floeter](https://wordpress.org/support/users/kometschuh/)
 * (@kometschuh)
 * [10 years ago](https://wordpress.org/support/topic/invalid-functions/#post-7370520)
 * How do you check the version? Please do it simple with a .php file and write 
   <? phpinfo(); ?> into it. Than call it.
 * If the error still occure, please leave us the error string here.

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Invalid functions’ is closed to new replies.

 * ![](https://ps.w.org/category-posts/assets/icon-256x256.png?rev=1419008)
 * [Category Posts Widget](https://wordpress.org/plugins/category-posts/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/category-posts/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/category-posts/)
 * [Active Topics](https://wordpress.org/support/plugin/category-posts/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/category-posts/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/category-posts/reviews/)

 * 4 replies
 * 3 participants
 * Last reply from: [Daniel Floeter](https://wordpress.org/support/users/kometschuh/)
 * Last activity: [10 years ago](https://wordpress.org/support/topic/invalid-functions/#post-7370520)
 * Status: resolved