get last level category name of a product in magen

问题:

I am trying to get only which category name that assigned a product and which category's have not any sub-category.

E.g :

Category
                -> Sub-category 1
                -> Sub-category 2
                -> Sub-category 3 
                                  -> Sub-sub-category 1
                                  -> sub-Sub-category 2
                                                        -> product 1
                                                        -> product 2

The above example , I want to get only sub-sub-category 2.

回答1:

you can try this

 $categories = Mage::getModel('catalog/category')
                    ->getCollection()
                    ->addAttributeToSelect('*')
                    ->addIsActiveFilter()
                   ->addAttributeToFilter('level',3)