Woocommerce – does it work?

I used the following code in my theme’s (or child theme) functions.php

add_action( 'woocommerce_before_customer_login_form', 'wsl_render_login_form_login_form' );
add_action( 'woocommerce_before_checkout_form', 'wsl_render_login_form_login_form' );

// Hook in
add_filter( 'woocommerce_checkout_fields' , 'custom_override_checkout_fields' );

// Our hooked in function - $fields is passed via the filter!
function custom_override_checkout_fields( $fields ) {
	$current_user = wp_get_current_user();
	$fields['billing']['billing_first_name']['default'] = $current_user->user_firstname;
	$fields['billing']['billing_last_name']['default'] = $current_user->user_lastname;
 	return $fields;
}