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Action Helpers allow developers to inject runtime and/or on-demand functionality into any Action Controllers that extend Zend_Controller_Action. Action Helpers aim to minimize the necessity to extend the abstract Action Controller in order to inject common Action Controller functionality.

There are a number of ways to use Action Helpers. Action Helpers employ the use of a brokerage system, similar to the types of brokerage you see in Zend_View_Helper, and that of Zend_Controller_Plugin. Action Helpers (like Zend_View_Helper) may be loaded and called on demand, or they may be instantiated at request time (bootstrap) or action controller creation time (init()). To understand this more fully, please see the usage section below.

Zend Framework