Title: PHP Error undefined function is_plugin_active_for_network()
Last modified: February 13, 2018

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# PHP Error undefined function is_plugin_active_for_network()

 *  Resolved [jikatal](https://wordpress.org/support/users/jikatal/)
 * (@jikatal)
 * [8 years, 3 months ago](https://wordpress.org/support/topic/php-error-undefined-function-is_plugin_active_for_network/)
 * When Litespeed plugin is active, it causes a PHP error when attempting to update
   any site plugin remotely. Appears to be an undefined function in plugin file.
   Occuring across several different domains. Deactiviating Litespeed plugin solves
   issue. Remote management is IWP ([https://infinitewp.com/](https://infinitewp.com/))
 * Occuring in Litespeed Plugin Versions 1.8.3 and 1.9
 * Error and stack trace below:
 * PHP Fatal error occurred: Uncaught Error: Call to undefined function is_plugin_active_for_network()
   
   in /home/$account/$domain.com/wp-content/plugins/litespeed-cache/admin/litespeed-
   cache-admin-display.class.php:75 Stack trace:
 * #0 /home/$account/$domain.com/wp-content/plugins/litespeed-cache/admin/litespeed-
   cache-admin-display.class.php(944): LiteSpeed_Cache_Admin_Display->__construct()
   #
   1 /home/$account/$domain.com/wp-content/plugins/litespeed-cache/admin/litespeed-
   cache-admin.class.php(33): LiteSpeed_Cache_Admin_Display::get_instance() #2 /
   home/$account/$domain.com/wp-content/plugins/litespeed-cache/admin/litespeed-
   cache-admin.class.php(278): LiteSpeed_Cache_Admin->__construct() #3 /home/$account/
   $domain.com/wp-content/plugins/litespeed-cache/inc/litespeed-cache.class.php(
   158): LiteSpeed_Cache_Admin::get_instance() #4 /home/$account/$domain.com/wp-
   includes/class-wp-hook.php(286): LiteSpeed_Cache->init(”) #5 /home/$account/$
   domain.com/wp in /home/$account/$domain.com/wp-content/plugins/litespeed-cache/
   admin/litespeed-cache-admin-display.class.php on line 75.

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

 *  Plugin Support [Hai Zheng⚡](https://wordpress.org/support/users/hailite/)
 * (@hailite)
 * [8 years, 3 months ago](https://wordpress.org/support/topic/php-error-undefined-function-is_plugin_active_for_network/#post-9969954)
 * Noted. Will check the compatibility. Thanks for report.
 *  Plugin Support [Hai Zheng⚡](https://wordpress.org/support/users/hailite/)
 * (@hailite)
 * [8 years, 2 months ago](https://wordpress.org/support/topic/php-error-undefined-function-is_plugin_active_for_network/#post-10049527)
 * This will be fixed in the following release.
    -  This reply was modified 8 years, 2 months ago by [Hai Zheng⚡](https://wordpress.org/support/users/hailite/).

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

The topic ‘PHP Error undefined function is_plugin_active_for_network()’ is closed
to new replies.

 * ![](https://ps.w.org/litespeed-cache/assets/icon-256x256.png?rev=2554181)
 * [LiteSpeed Cache](https://wordpress.org/plugins/litespeed-cache/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/litespeed-cache/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/litespeed-cache/)
 * [Active Topics](https://wordpress.org/support/plugin/litespeed-cache/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/litespeed-cache/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/litespeed-cache/reviews/)

## Tags

 * [php-error](https://wordpress.org/support/topic-tag/php-error/)
 * [undefined function](https://wordpress.org/support/topic-tag/undefined-function/)

 * 2 replies
 * 2 participants
 * Last reply from: [Hai Zheng⚡](https://wordpress.org/support/users/hailite/)
 * Last activity: [8 years, 2 months ago](https://wordpress.org/support/topic/php-error-undefined-function-is_plugin_active_for_network/#post-10049527)
 * Status: resolved