Sorts the results returned by Wordpress' wp_get_nav_menu_items() function into a hierarchichal multi-dimensional array.

wp_get_nav_menu_items_hierarchy

/*
*   you can use this function just like the way you use wp_get_nav_menu_items() in wordpress
*
*/	
	
	
	function wp_get_nav_menu_items_hierarchy($menu,$args=null){
		$arr = array();
		
		function _inject_child($id,$item,&$list){
			if($id==0){
				$list[] = $item;
			} else {
				foreach($list AS &$child){
					if($child->ID==$id){
						if(!isset($child->children)){
							$child->children = array();
						}
						$child->children[] = $item;
					} else {
						if(isset($child->children) && count($child->children)>0){
							_inject_child($id,$item,$child->children);
						}
					}
				}
			}
		}
		foreach (wp_get_nav_menu_items($menu, $args) AS $menu_item){
			_inject_child($menu_item->menu_item_parent, $menu_item, $arr);
		}
		return $arr;
	}