In a new post to his blog Matthew Weier O'Phinney looks at creating reusable plugins for the Zend_Application component of the Zend Framework. This is a follow-up from his previous article introducing Zend_Application.
What happens when you need a re-usable resource for which there is no existing plugin shipped? Why, write your own, of course! All plugins in Zend Framework follow a common pattern. Basically, you group plugins under a common directory, with a common class prefix, and then notify the pluggable class of their location.
His example shows a plugin that can set the doctype of the view you're using and set the default page title and the separator. He mentions things like the framework's coding/naming standards, dependency tracking, setting up the configuration and, finally, doing the two actions laid out at the start. A few simple lines added to the application.ini file and you're all set to start using the new plugin.