Title: [Plugin: WP-UserOnline] PHP error in admin settings
Last modified: August 19, 2016

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# [Plugin: WP-UserOnline] PHP error in admin settings

 *  [MWM](https://wordpress.org/support/users/mike235/)
 * (@mike235)
 * [15 years, 8 months ago](https://wordpress.org/support/topic/plugin-wp-useronline-php-error-in-admin-settings/)
 * I upgraded the plugin this morning, but still get the same PHP errors as in the
   previous version :
 *     ```
       Warning: array_keys() [function.array-keys]: The first argument should be an array in /home/www/wp-content/plugins/wp-useronline/admin.php on line 264
   
       Warning: Invalid argument supplied for foreach() in /home/www/wp-content/plugins/wp-useronline/admin.php on line 264
       ```
   
 * Also, on the frontend, the users_online() function I inseted into my template
   shows the link to the useronline page, but not the user count.

Viewing 1 replies (of 1 total)

 *  Plugin Author [scribu](https://wordpress.org/support/users/scribu/)
 * (@scribu)
 * [15 years, 8 months ago](https://wordpress.org/support/topic/plugin-wp-useronline-php-error-in-admin-settings/#post-1684300)
 * I suspect the plugin isn’t activated properly. Try going to the settings page
   and click all the “Restore defaults” buttons and then save.

Viewing 1 replies (of 1 total)

The topic ‘[Plugin: WP-UserOnline] PHP error in admin settings’ is closed to new
replies.

 * ![](https://ps.w.org/wp-useronline/assets/icon.svg?rev=978026)
 * [WP-UserOnline](https://wordpress.org/plugins/wp-useronline/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-useronline/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-useronline/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-useronline/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-useronline/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-useronline/reviews/)

## Tags

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

 * 1 reply
 * 2 participants
 * Last reply from: [scribu](https://wordpress.org/support/users/scribu/)
 * Last activity: [15 years, 8 months ago](https://wordpress.org/support/topic/plugin-wp-useronline-php-error-in-admin-settings/#post-1684300)
 * Status: not resolved