pmpro-add-welcome-name-to-menu.php

<?php
/**
 * This recipe will add Welcome User Display name to the Primary Menu
 * 
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
 
 
function my_add_welcome_user_menu_item( $items, $args ) {
	if ( is_user_logged_in() ) {
		$user  = wp_get_current_user();
		$name  = $user->display_name; // or user_login , user_firstname, user_lastname
		$items = '<li><a href="">Welcome, ' . $name . '</a></li>' . $items;
	}
	return $items;
}
add_filter( 'wp_nav_menu_items', 'my_add_welcome_user_menu_item', 10, 2 );