Повна назва області

gistfile1.php

<?php 

// state name
add_filter('tscf_filter_codetemplate', function ($list, $order_id) {

    $order = wc_get_order($order_id);

    $billing_state_code = $order->get_billing_state();
    $billing_country = $order->get_billing_country();

    $billing_state_name = \WC()->countries->states[$billing_country][$billing_state_code] ?? $billing_state_code;

    $list['{billing_state_name}'] = $billing_state_name;

    return $list;


}, 20, 2);