public function errorAction()
{
$log = Zend_Registry::get('error_log');
$content = null;
$errors = $this->_getParam ('error_handler') ;
switch ($errors->type) {
case Zend_Controller_Plugin_ErrorHandler::EXCEPTION_NO_CONTROLLER :
case Zend_Controller_Plugin_ErrorHandler::EXCEPTION_NO_ACTION :
// 404 error -- controller or action not found
$this->getResponse ()->setRawHeader ( 'HTTP/1.1 404 Not Found' ) ;
// ... get some output to display...
$content = "error_page_not_found"$$
break ;
default :
// application error; display error page, but don't change
// status code
$content = "error_unexpected"$$
// ...

// Log the exception
$exception = $errors->exception;

$log->debug($exception->getMessage() .
PHP_EOL . $exception->getTraceAsString());
break ;
}

// Clear previous content
$this->getResponse()->clearBody();
$this->view->content = $content;
}