aca pongo la solucion
Código PHP:
$last = end(array_keys($breadcrumb_list));
$i=$last;
foreach ($breadcrumb_list as $key => $breadcrumb_item)
{
if(!empty($breadcrumb_item))
{
$item_parent_url =(implode('/',array_slice(array_reverse ($breadcrumb_list),$i))) ;
$i--;
$meta= new stdClass();
$meta->name=$breadcrumb_item;
$meta->parent_url=$item_parent_url;
array_push($breadcrumbs, $meta);
}
}