Title: Undefined array key
Last modified: April 7, 2025

---

# Undefined array key

 *  Resolved [loafintree](https://wordpress.org/support/users/loafintree/)
 * (@loafintree)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/undefined-array-key-59/)
 * Can someone please help stop these errors so they do not clog up our log files?
   It is being thrown multiple times per second, as seen below.
 *     ```wp-block-code
       [07-Apr-2025 16:07:49 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112[07-Apr-2025 16:07:50 UTC] PHP Warning: Undefined array key 1 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 113[07-Apr-2025 16:07:51 UTC] PHP Warning: Undefined array key 0 in /home/twomyclinicshop/public_html/wp-content/plugins/woocommerce/src/Database/Migrations/MetaToMetaTableMigrator.php on line 112
       ```
   

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [Jonayed (woo-hc)](https://wordpress.org/support/users/jonayedhosen/)
 * (@jonayedhosen)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/undefined-array-key-59/#post-18404471)
 * Hi [@loafintree](https://wordpress.org/support/users/loafintree/) ,
 * Thanks for reaching out!
 * It looks like WooCommerce is throwing PHP warnings due to undefined array keys
   in the **MetaToMetaTableMigrator.php** file. This can sometimes happen after 
   updates or certain changes in your environment.
 * To get this sorted, I’d recommend the following:
 * **Ensure WooCommerce is up-to-date**: Double-check that you’re running the latest
   version of WooCommerce. Sometimes these kinds of warnings are addressed in updates.
 * **Suppress warnings temporarily**: If you’d like to hide the warnings for now
   while you’re troubleshooting, you can add this line to your **wp-config.php**
   file:
 *     ```wp-block-code
       error_reporting(E_ALL & ~E_WARNING); 
       ```
   
 * This will prevent the warnings from being logged. Keep in mind, though, this 
   is just a temporary fix to keep things running smoothly.
 * **Test with a different PHP version**: If you’re still having trouble, it might
   help to try downgrading to an earlier version of PHP temporarily. Sometimes newer
   PHP versions can cause compatibility issues with older plugin code, and reverting
   to a more stable version might clear things up.
 * I hope this helps!
 *  Plugin Support [Feten L. a11n](https://wordpress.org/support/users/fetenlakhal/)
 * (@fetenlakhal)
 * [1 year ago](https://wordpress.org/support/topic/undefined-array-key-59/#post-18499649)
 * Hi there,
 * As we haven’t had any updates, I’ll assume this is resolved and close the thread.
   Feel free to reconnect anytime.
 * Apart from this, if you’re happy with our plugin and the support you’ve received,
   we’d really appreciate a review: [https://wordpress.org/support/plugin/woocommerce/reviews/#new-post](https://wordpress.org/support/plugin/woocommerce/reviews/#new-post)
    -  This reply was modified 1 year ago by [Feten L. a11n](https://wordpress.org/support/users/fetenlakhal/).

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Undefined array key’ is closed to new replies.

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## Tags

 * [php 8.1](https://wordpress.org/support/topic-tag/php-8-1/)

 * 2 replies
 * 3 participants
 * Last reply from: [Feten L. a11n](https://wordpress.org/support/users/fetenlakhal/)
 * Last activity: [1 year ago](https://wordpress.org/support/topic/undefined-array-key-59/#post-18499649)
 * Status: resolved