One dimensional wordpress nav object to nested array

wordpress-nested-nav.php

<?php

class Nested_nav {

    public $wp_nav;
    public $nested_nav;

    function __construct($menu, $args = null) {
        $this->wp_nav = wp_get_nav_menu_items($menu, $args);
        $this->nested_nav = $this->buildTree( $this->wp_nav );
    }

    private function buildTree(array $elements, $parentId = 0) {
        $branch = array();

        foreach ($elements as $element) {

            if ($element->menu_item_parent == $parentId) {
                $children = $this->buildTree($elements, $element->ID);
                if ($children) {
                    $element->children = $children;
                }
                $branch[] = $element;
            }
        }

        return $branch;
    }
}

// $nav = new Nested_nav('main');
// print_r($nav->wp_nav);
// print_r($nav->nested_nav);

?>

This is a lifesaver! Thank you!

Truly lifesaver ;)