The string we are going to extract the numbers from.
The regular expression (PHP) you want to use to extract the data for.
Define whether to extract only the first, or all matches.
(String) Register a custom WordPress hook callback. The value will be called as followed: do_action( $yourdefinedaction, $action_return_data, $request_data )
More available WP Webhooks Formatter endpoints
To learn more about a specific endpoint, simply click on it.