If you’re running a WooCommerce store, you might have noticed that the default display name of users on the “My Account” page is often just the username. Many store owners prefer to showcase the full name for a more professional and personable touch. Here’s a short code on how you can achieve this!

put this code on functions.php

add_action( 'wp_login', 'custom_set_display_name_publicly_as');

function custom_set_display_name_publicly_as( $username ) {
	
	$user = get_user_by( 'login', $username );

	$first_name = get_user_meta( $user->ID, 'first_name', true );
	$last_name = get_user_meta( $user->ID, 'last_name', true );

	$full_name = trim( $first_name . ' ' . $last_name );

	if ( ! empty( $full_name ) && ( $user->data->display_name != $full_name ) ) {
		$userdata = array(
			'ID' => $user->ID,
			'display_name' => $full_name,
		);

		wp_update_user( $userdata );
	}
}