Title: php warning Last modified: January 20, 2021 --- # php warning * Resolved [mredodos](https://wordpress.org/support/users/mredodos/) * (@mredodos) * [5 years, 4 months ago](https://wordpress.org/support/topic/php-warning-272/) * Warning: array_key_exists(): The first argument should be either a string or an integer in /var/web/site/public_html/wp-content/plugins/duplicate-post/src/ ui/class-post-list.php on line 109 Warning: Illegal offset type in /var/web/site/ public_html/wp-content/plugins/duplicate-post/src/ui/class-post-list.php on line 113 Notice: wpdb::prepare è stato richiamato in maniera scorretta. Tipo di valore non supportato (array). Leggi Debugging in WordPress per maggiori informazioni.( Questo messaggio è stato aggiunto nella versione 4.8.2.) in /var/web/site/public_html/ wp-includes/functions.php on line 5311 Warning: Illegal offset type in /var/web/ site/public_html/wp-content/plugins/duplicate-post/src/ui/class-post-list.php on line 127 Warning: Illegal offset type in /var/web/site/public_html/wp-content/ plugins/duplicate-post/src/ui/class-post-list.php on line 130 Warning: array_keys() expects parameter 1 to be array, null given in /var/web/site/public_html/wp-content/ plugins/duplicate-post/src/ui/class-post-list.php on line 63 Warning: array_merge(): Expected parameter 2 to be an array, null given in /var/web/site/public_html/ wp-content/plugins/duplicate-post/src/ui/class-post-list.php on line 63 Viewing 3 replies - 1 through 3 (of 3 total) * [Md Mazedul Islam Khan](https://wordpress.org/support/users/mazedulislamkhan/) * (@mazedulislamkhan) * [5 years, 4 months ago](https://wordpress.org/support/topic/php-warning-272/#post-13937103) * We are sorry to hear that you’re having trouble with our plugin. We can imagine how that could be frustrating for you. * Can you please try the given solution [here](https://wordpress.org/support/topic/error-still-present-after-update-for-v4-0-2/#post-13922517) to see whether this resolves the issue for you? * We look forward to hearing from you. * [rtimmer](https://wordpress.org/support/users/rtimmer/) * (@rtimmer) * [5 years, 4 months ago](https://wordpress.org/support/topic/php-warning-272/#post-13948758) * I am having the same issue and I am not using Rankmath. * **Main config:** - WooCommerce: 4.9.1 - WordPress: 5.6 - PHP: 7.4.0 - Elementor: 3.0.16 - Yoast Duplicate Post: 4.0.2 * **Messages** Warning: array_key_exists(): The first argument should be either a string or an integer in …/plugins/duplicate-post/src/ui/class-post-list.php on line 109 Warning: Illegal offset type in …/plugins/duplicate-post/src/ui/class- post-list.php on line 113 * Notice: wpdb::prepare was called **incorrectly**. Unsupported value type (array). * Warning: Illegal offset type in …/plugins/duplicate-post/src/ui/class-post-list. php on line 127 * Warning: Illegal offset type in …/plugins/duplicate-post/src/ui/class-post-list. php on line 130 * Warning: array_keys() expects parameter 1 to be array, null given in …/plugins/ duplicate-post/src/ui/class-post-list.php on line 63 * Warning: array_merge(): Expected parameter 2 to be an array, null given in …/ plugins/duplicate-post/src/ui/class-post-list.php on line 63 * Warning: array_key_exists(): The first argument should be either a string or an integer in …/plugins/duplicate-post/src/ui/class-post-list.php on line 109 * Warning: Illegal offset type in …/plugins/duplicate-post/src/ui/class-post-list. php on line 113 * [Pcosta88](https://wordpress.org/support/users/pcosta88/) * (@pcosta88) * [5 years, 4 months ago](https://wordpress.org/support/topic/php-warning-272/#post-13955187) * [@rtimmer](https://wordpress.org/support/users/rtimmer/) [@mredodos](https://wordpress.org/support/users/mredodos/) * These errors are part of a bug. A fix is ready and will be released in v4.1 of Duplicate Post. We are not sure when it will be released only that a fix is expected to be a part of it. * In the meantime, we suggest signing up for our newsletter as that is where we will announce product changes and updates. You may sign-up for it here [https://yoast.com/](https://yoast.com/) by scrolling towards the bottom to complete the sign-up field. Viewing 3 replies - 1 through 3 (of 3 total) The topic ‘php warning’ is closed to new replies. * ![](https://ps.w.org/duplicate-post/assets/icon-256x256.png?rev=2336666) * [Yoast Duplicate Post](https://wordpress.org/plugins/duplicate-post/) * [Frequently Asked Questions](https://wordpress.org/plugins/duplicate-post/#faq) * [Support Threads](https://wordpress.org/support/plugin/duplicate-post/) * [Active Topics](https://wordpress.org/support/plugin/duplicate-post/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/duplicate-post/unresolved/) * [Reviews](https://wordpress.org/support/plugin/duplicate-post/reviews/) * 3 replies * 4 participants * Last reply from: [Pcosta88](https://wordpress.org/support/users/pcosta88/) * Last activity: [5 years, 4 months ago](https://wordpress.org/support/topic/php-warning-272/#post-13955187) * Status: resolved