Title: array_key_exists() PHP Warning in debug.log Last modified: February 28, 2018 --- # array_key_exists() PHP Warning in debug.log * Resolved [TyantA](https://wordpress.org/support/users/tyanta/) * (@tyanta) * [8 years, 2 months ago](https://wordpress.org/support/topic/array_key_exists-php-warning-in-debug-log/) * I’m seeing a lot of PHP warnings like the following: * PHP Warning: array_key_exists() expects parameter 2 to be array, null given in../ plugins/wp-mail-logging/WPML_OptionsManager.php on line 39 * Any idea what is causing them? * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Farray_key_exists-php-warning-in-debug-log%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 1 replies (of 1 total) * [No3x](https://wordpress.org/support/users/no3x/) * (@no3x) * [8 years, 2 months ago](https://wordpress.org/support/topic/array_key_exists-php-warning-in-debug-log/#post-10029184) * Just save the settings once. Sorry for this Viewing 1 replies (of 1 total) The topic ‘array_key_exists() PHP Warning in debug.log’ is closed to new replies. * ![](https://ps.w.org/wp-mail-logging/assets/icon-256x256.jpg?rev=2562296) * [WP Mail Logging](https://wordpress.org/plugins/wp-mail-logging/) * [Frequently Asked Questions](https://wordpress.org/plugins/wp-mail-logging/#faq) * [Support Threads](https://wordpress.org/support/plugin/wp-mail-logging/) * [Active Topics](https://wordpress.org/support/plugin/wp-mail-logging/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/wp-mail-logging/unresolved/) * [Reviews](https://wordpress.org/support/plugin/wp-mail-logging/reviews/) ## Tags * [PHP Warning](https://wordpress.org/support/topic-tag/php-warning/) * 1 reply * 2 participants * Last reply from: [No3x](https://wordpress.org/support/users/no3x/) * Last activity: [8 years, 2 months ago](https://wordpress.org/support/topic/array_key_exists-php-warning-in-debug-log/#post-10029184) * Status: resolved