Title: PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback
Last modified: March 19, 2020

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# PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback

 *  [llgreg](https://wordpress.org/support/users/llgreg/)
 * (@llgreg)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/php-warning-call_user_func_array-expects-parameter-1-to-be-a-valid-callback-7/)
 * This is the following error (currently warnings) that we are getting with the
   Zoho plugin.
 *     ```
       [19-Mar-2020 09:26:09 UTC] PHP Warning:  call_user_func_array() expects parameter 1 to be a valid callback, class 'ZohoCampaign' does not have a  method 'my_custom_checkout_field_update_order_meta' in  /wp-includes/class-wp-hook.php on line 290
       [19-Mar-2020 09:39:12 UTC] PHP Warning:  call_user_func_array() expects parameter 1 to be a valid callback, class 'ZohoCampaign' does not have a  method 'my_custom_checkout_field_update_order_meta' in  /wp-includes/class-wp-hook.php on line 290
       [19-Mar-2020 09:43:42 UTC] PHP Warning:  call_user_func_array() expects parameter 1 to be a valid callback, class 'ZohoCampaign' does not have a method 'my_custom_checkout_field_update_order_meta' in  /wp-includes/class-wp-hook.php on line 290
       ```
   
 * The file `./plugins/zoho-campaigns/includes/class.zcwc.php` seem to have code
   referenced by this, would be great you could take a into this and possibly apply
   a fix for us please?
 *     ```
       Zoho Campaigns plugin version 2.0.3
       WooCommerce version 4.0.0
       Wordpress version v5.3.2
       ```
   

Viewing 1 replies (of 1 total)

 *  Thread Starter [llgreg](https://wordpress.org/support/users/llgreg/)
 * (@llgreg)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/php-warning-call_user_func_array-expects-parameter-1-to-be-a-valid-callback-7/#post-12560928)
 * [@zoho-campaigns](https://wordpress.org/support/users/zoho-campaigns/)

Viewing 1 replies (of 1 total)

The topic ‘PHP Warning: call_user_func_array() expects parameter 1 to be a valid
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 * ![](https://ps.w.org/zoho-campaigns/assets/icon-256x256.png?rev=2866851)
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## Tags

 * [call_user_func_array](https://wordpress.org/support/topic-tag/call_user_func_array/)
 * [PHP Warning](https://wordpress.org/support/topic-tag/php-warning/)

 * 1 reply
 * 1 participant
 * Last reply from: [llgreg](https://wordpress.org/support/users/llgreg/)
 * Last activity: [6 years, 2 months ago](https://wordpress.org/support/topic/php-warning-call_user_func_array-expects-parameter-1-to-be-a-valid-callback-7/#post-12560928)
 * Status: not resolved