public function get_active_shipping_services()
{
global $wpdb;
$active_shipping_services = array();
$shipping_service_ids = $this->get_service_schemas_store()->get_all_service_ids_of_type('shipping');
foreach ($shipping_service_ids as $shipping_service_id) {
$is_active = $wpdb->get_var($wpdb->prepare("SELECT instance_id FROM wp_woocommerce_shipping_zone_methods WHERE is_enabled = 1 AND method_id = %s LIMIT 1;", $shipping_service_id));
if ($is_active) {
$active_shipping_services[] = $shipping_service_id;
}
}
return $active_shipping_services;
}