Title: is_plugin_active used incorrectly
Last modified: August 26, 2020

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# is_plugin_active used incorrectly

 *  [JK](https://wordpress.org/support/users/justin_k/)
 * (@justin_k)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/is_plugin_active-used-incorrectly/)
 * With this plugin installed, whenever I login to WP, it dies, saying “Call to 
   undefined function is_plugin_active.”
 * The plugin should ensure that this is only called after admin_init has fired,
   but it doesn’t. It therefore breaks logins in some scenarios. Please see: [https://wordpress.stackexchange.com/questions/9345/is-plugin-active-function-doesnt-exist](https://wordpress.stackexchange.com/questions/9345/is-plugin-active-function-doesnt-exist)

The topic ‘is_plugin_active used incorrectly’ is closed to new replies.

 * ![](https://ps.w.org/email-notification-on-login/assets/icon-256x256.jpg?rev=
   1747661)
 * [Email Notification on Login](https://wordpress.org/plugins/email-notification-on-login/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/email-notification-on-login/#faq)
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 * 0 replies
 * 1 participant
 * Last reply from: [JK](https://wordpress.org/support/users/justin_k/)
 * Last activity: [5 years, 9 months ago](https://wordpress.org/support/topic/is_plugin_active-used-incorrectly/)
 * Status: not resolved