woocommerce_checkout_update_customer_data │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_checkout_update_customer_data', 'wp_kama_woocommerce_checkout_update_customer_data_filter', 10, 2 );

/**
 * Function for `woocommerce_checkout_update_customer_data` filter-hook.
 * 
 * @param  $true 
 * @param  $that 
 *
 * @return 
 */
function wp_kama_woocommerce_checkout_update_customer_data_filter( $true, $that ){

	// filter...
	return $true;
}

$true

-

$that

-

Where the hook is called

if ( $customer_id && apply_filters( 'woocommerce_checkout_update_customer_data', true, $this ) ) {

Where the hook is used in WooCommerce