On PHPBuilder.com today there's a new tutorial from Jason Gilmore about using the action helpers in the Zend Framework to help reduce the amount of redundant code spread all over your application.

Embracing a framework-driven approach to Web development enhances productivity in many ways, not the least of which is the ability to stay DRY (Don't Repeat Yourself). Eliminating the redundant reuse of code throughout a Web application will greatly improve your ability to effectively test and later refactor code, not to mention locate and diagnose the inevitable bugs that will creep into the project. [...] The Zend Framework refers to these reusable logical snippets as action helpers, and in this article I'll show you how to create, configure and execute action helpers within your Zend Framework-powered applications.

He walks you through the steps of creating an action helper to create a simple one-time URL for an example application's email confirmation links. The class (WJG_Controller_Action_Helper_GenerateID) extends the abstract action controller and generates the code to append to the URL. When the code is needed, the helper can just be called directly and the string is returned for use in multiple types of emails.