How to Hide Zero Quantity Items in Dropdown Payment Field Notifications

/**

 * Hiding Zero Quantity Items in Email Notifications for Payment Fields

 *

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

 */

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

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

        // Adjust to handle 'payment-single', 'payment-select', or any other types

        if (

            isset($form_data['fields'][$field_id]['type']) && 

            in_array($form_data['fields'][$field_id]['type'], ['payment-select', 'payment-single'])

        ) {

            $quantity = isset($field['quantity']) ? (int) $field['quantity'] : 0;

            if ($quantity == 0) {

                unset($fields[$field_id]);

            }

        }

    }

    return $fields;

}, 10, 3);