A big problem with WHMCS is that you don't have any API to manage customfields. With this API you can update all clients, products and support custom fields.
You can use it as a standard WHMCS API. You may want to use it with internal API function. In this case WHMCS documentation is helpful so no more explanations are required. Keep in mind that due to the way WHMCS handles API permissions, you will only be able to use this as internal API.
To use it you have to upload the updatecustomfields.php (all lowercase) into the /includes/api whmcs folder and it's done.$19 - Download Now
|relid||int||The ID of the related item you want to get the custom fields for||Required|
|type||string||Supports client, product or support. defaults to client||Optional|
|customfield||int or string||Use either the id of the customfield or its name||Required|
|value||string||The new value for the custom field, can be empty||Optional|
|result||string||The result of the operation: success or error|
|message||string||The result message|
Given the recent changes in WHMCS custom API work only with the Local API function.
$command = 'UpdateCustomFields'; $postData = array( 'relid' =&gt; 1, 'customfield' =&gt; 12, 'value' =&gt; 'newvalue', ); $adminUsername = 'ADMIN_USERNAME'; $results = localAPI($command, $postData, $adminUsername); print_r($results);
Array ( [result] =&gt; success, [message] =&gt; Custom field with id # has been updated with the value: newvalue, )
Error response codes are:
Got questions or problems? Contact us or comment, we'll be happy to help.