How to Hide Zero Quantity Items in Dropdown Payment Field Notifications

/**

 * Hide zero quantity items from Dropdown Items payment field notifications

 *

 * @link https://wpforms.com/developers/how-to-hide-zero-quantity-items-in-dropdown-payment-field-notifications

 */

add_action('wpforms_loaded', function() {

    add_filter('wpforms_entry_email_data', function ($fields, $entry, $form_data) {

        foreach ($fields as $field_id => $field) {

            if ('payment-select' === $field['type']) {

                // Get the quantity from the quantities array

                $field_number = substr($field_id, -1); // Get the last digit of field ID

                $quantity = isset($entry['quantities'][$field_number]) ? intval($entry['quantities'][$field_number]) : 0;

                if ($quantity == 0) {

                    unset($fields[$field_id]);

                    continue;

                }

            }

        }

        return $fields;

    }, 10, 3);

});