woocommerce_shipping_classes_column_(class) хук-событие . WC 1.0
Использование
add_action( 'woocommerce_shipping_classes_column_(class)', 'action_function_name_1814' ); function action_function_name_1814(){ // action... }
Где вызывается хук
woocommerce_shipping_classes_column_(class)
woocommerce/includes/admin/settings/views/html-admin-page-shipping-classes.php 83
do_action( 'woocommerce_shipping_classes_column_' . $class );