Title: Error msg PHP Warning: Undefined array key “product_cat”
Last modified: May 15, 2023

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# Error msg PHP Warning: Undefined array key “product_cat”

 *  [David Simon](https://wordpress.org/support/users/davidsimon14/)
 * (@davidsimon14)
 * [3 years ago](https://wordpress.org/support/topic/error-msg-php-warning-undefined-array-key-product_cat/)
 * Hi, I have a lot of error messages like this one:
 * AH01071: Got error ‘PHP message: PHP Warning: Undefined array key “product_cat”
   in [***] [/wp-content/plugins/product-quantity-for-woocommerce-pro/includes/class-alg-wc-pq-core.php](https://serveur.vimaweb.fr/smb/file-manager/code-editor?currentDir=%2Fhttpdocs%2Fwp-content%2Fplugins%2Fproduct-quantity-for-woocommerce-pro%2Fincludes&subscriptionId=115&file=class-alg-wc-pq-core.php&redirect=%2Fsmb%2Flog-file%2Fbrowser%2Fid%2F115)
   on line 1382
 * It’s here:
 *     ```wp-block-code
       function set_quantity_input_args( $args, $product ) {
       		global $wp_query;
   
       		$category_name = $wp_query->query_vars['product_cat'];
       ```
   
 * Can you help me solve it?
 * Thanks!
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ferror-msg-php-warning-undefined-array-key-product_cat%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  [miemie](https://wordpress.org/support/users/miemie/)
 * (@miemie)
 * [3 years ago](https://wordpress.org/support/topic/error-msg-php-warning-undefined-array-key-product_cat/#post-16740268)
 * Hi [@davidsimon14](https://wordpress.org/support/users/davidsimon14/),
 * It seems that you are using another plugin which is not our plugin. The error
   doesn’tt come from our plugin.
 * Regards,

Viewing 1 replies (of 1 total)

The topic ‘Error msg PHP Warning: Undefined array key “product_cat”’ is closed to
new replies.

 * ![](https://ps.w.org/wpc-product-quantity/assets/icon-128x128.png?rev=2213388)
 * [WPC Product Quantity for WooCommerce](https://wordpress.org/plugins/wpc-product-quantity/)
 * [Support Threads](https://wordpress.org/support/plugin/wpc-product-quantity/)
 * [Active Topics](https://wordpress.org/support/plugin/wpc-product-quantity/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wpc-product-quantity/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wpc-product-quantity/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [miemie](https://wordpress.org/support/users/miemie/)
 * Last activity: [3 years ago](https://wordpress.org/support/topic/error-msg-php-warning-undefined-array-key-product_cat/#post-16740268)
 * Status: not resolved