woocommerce_checkout_customer_id │ filter-hook │ WC 3.0.0

Provides an opportunity to modify the customer ID associated with the current checkout process.

Usage

add_filter( 'woocommerce_checkout_customer_id', 'wp_kama_woocommerce_checkout_customer_id_filter' );

/**
 * Function for `woocommerce_checkout_customer_id` filter-hook.
 * 
 * @param int $current_user_id The current user's ID (this may be 0 if no user is logged in).
 *
 * @return int
 */
function wp_kama_woocommerce_checkout_customer_id_filter( $current_user_id ){

	// filter...
	return $current_user_id;
}

$current_user_id(int)

The current user's ID (this may be 0 if no user is logged in).

Changelog

Where the hook is called

return apply_filters( 'woocommerce_checkout_customer_id', get_current_user_id() );

$order->set_customer_id( apply_filters( 'woocommerce_checkout_customer_id', get_current_user_id() ) );

$customer_id = apply_filters( 'woocommerce_checkout_customer_id', get_current_user_id() );

Where the hook is used in WooCommerce