Zend Framework: How to intentionally throw a 404 error?

I would like to intentionally cause a 404 error within one of the controllers in my Zend Framework application. How ca开发者_Python百科n I do this?

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A redirect to a 404 would be:

throw new Zend_Controller_Action_Exception('Your message here', 404);

Or without Exception:

$this->_response->clearBody();
$this->_response->clearHeaders();
$this->_response->setHttpResponseCode(404);

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You can always set the response code manually, without throwing any exceptions.

$this->_response->clearBody();
$this->_response->clearHeaders();
$this->_response->setHttpResponseCode(404);