Title: All-In-One Event Calendar Throwing PHP Array errors
Last modified: August 21, 2016

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# All-In-One Event Calendar Throwing PHP Array errors

 *  [ttavelli](https://wordpress.org/support/users/ttavelli/)
 * (@ttavelli)
 * [11 years, 11 months ago](https://wordpress.org/support/topic/all-in-one-event-calendar-throwing-php-array-errors/)
 * I have a WordPress MU site and use All-in-One Event Calendar on most of them.
   My provider contacted me saying the PHP log is filling up with the following 
   two errors:
 * [18-Jun-2014 16:11:27 UTC] PHP Warning: array_combine(): Both parameters should
   have at least 1 element in D:\Webdocs\bycadmin\byc.org\wwwroot\wp-content\plugins\
   all-in-one-event-calendar\app\model\class-ai1ec-settings.php on line 902
    [18-
   Jun-2014 16:11:27 UTC] PHP Warning: array_diff(): Argument #1 is not an array
   in D:\Webdocs\bycadmin\byc.org\wwwroot\wp-content\plugins\all-in-one-event-calendar\
   app\controller\class-ai1ec-calendar-controller.php on line 145
 * This is causing server issues as these are being generated constantly. I looked
   at the code in these two files and it appears related to array errors with tags
   and options.
 * Any help would be greatly appreciated.

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## Tags

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

 * 0 replies
 * 1 participant
 * Last reply from: [ttavelli](https://wordpress.org/support/users/ttavelli/)
 * Last activity: [11 years, 11 months ago](https://wordpress.org/support/topic/all-in-one-event-calendar-throwing-php-array-errors/)
 * Status: not resolved

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