Handling exceptions with Zend Framework 1

ErrorController

<?php
class ErrorController extends Zend_Controller_Action {

  public function init() {
    parent::init();
  }

  public function errorAction() {
    $errors = $this->_getParam('error_handler');
    $boot = $this->getInvokeArg('bootstrap');
    if ($boot->hasResource('logger')) {
      $boot->getResource('logger')->err($errors->exception);
    }
    
    switch ($errors->type) {
      case Zend_Controller_Plugin_ErrorHandler::EXCEPTION_NO_ROUTE:
      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()->setHttpResponseCode(404);
      $this->render();
      break;
      default:
      
      // application error
      $this->getResponse()->setHttpResponseCode(500);
      $this->render('error500');
      break;
    }

    // Log exception, if logger available
    if ($log = $this->getLog()) {
      $log->crit($this->view->message, $errors->exception);
    }

    // conditionally display exceptions
    if ($this->getInvokeArg('displayExceptions') == true) {
      $this->view->exception = $errors->exception;
    }

    $this->view->request = $errors->request;
  }

  public function getLog() {
    $bootstrap = $this->getInvokeArg('bootstrap');
    if (!$bootstrap->hasPluginResource('Log')) {
      return false;
    }
    $log = $bootstrap->getResource('Log');
    return $log;
  }

}