I am looking for a way to get a products most child like category. For example if I have
category1 -> category1.1 -> category1.1.1
I then need category1.1.1
Assuming I have a product that belongs to all three categories is there a specific way to call the most deeply rooted category.
I know I can return all categories belonging to a product by doing this:
echo $_product->getCategoryIds()
But I need a programmatical way to know which is the deepest child.