It is used for Front Controller pattern. Zend also uses singleton pattern.
Below are the functions specific to Zend_Controller_Front:

  • ‘routeStartup’: This function is called before Zend_Controller_Front calls on the router to evaluate the request.
  • ‘routeShutdown’: This function is called after the router finishes routing the request.
  • ‘dispatchLoopStartup’: This is called before Zend_Controller_Front enters its dispatch loop.
  • ‘preDispatch’: called before an action is dispatched by the dispatcher.
  • ‘postDispatch’: is called after an action is dispatched by the dispatcher.

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