如何在zend框架中注册新的助手（自定义助手）

protected function _initView()
{
        $view = $this->bootstrap(\'layout\')->getResource(\'layout\')->getView();
        $view->addHelperPath(\'Your/Custom/Path/\', \'Your_Custom_Path\');

        $viewRenderer = new Zend_Controller_Action_Helper_ViewRenderer();
        $viewRenderer->setView($view);

        Zend_Controller_Action_HelperBroker::addHelper($viewRenderer);
}