woocommerce_countries_base_state │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_countries_base_state', 'wp_kama_woocommerce_countries_base_state_filter' );

/**
 * Function for `woocommerce_countries_base_state` filter-hook.
 * 
 * @param  $default_state 
 *
 * @return 
 */
function wp_kama_woocommerce_countries_base_state_filter( $default_state ){

	// filter...
	return $default_state;
}

$default_state

-

Where the hook is called

return apply_filters( 'woocommerce_countries_base_state', $default['state'] );

Where the hook is used in WooCommerce