The PHP Geek points out an older article concerning the combination of two of the major PHP frameworks - CakePHP and the Zend Framework.

I am sure you already heard about the Zend framework. It provides some nice components (don't confuse them with Cake components) for which there are no equivalents in the core of CakePHP. Due to the flexibility of CakePHP it is relatively easy to use these Zend components within a CakePHP application (be aware that the Zend Framework requires PHP5).

The tutorial is a simple five step process where the only difficult part is adding in the correct include path information in the Zend_Feed component.