This view helper provides the ability to inject and later retrieve a Zend_Http_UserAgent instance for use in branching display logic based on device capabilities. In most cases, you can simply retrieve the User-Agent and related device by calling the helper. If the UserAgent was configured in the bootstrap, that instance will be injected already in the helper; otherwise, it will instantiate one for you. userAgent()->getDevice()->hasFlash()): ?> ]]> If you initialize the UserAgent object manually, you can still inject it into the helper, in one of two ways. getHelper('userAgent'); $helper->setUserAgent($userAgent); // Pass the UserAgent to the helper: $view->userAgent($userAgent); ]]> userAgent Zend_Http_UserAgent $userAgent = null Use this method to set or retrieve the UserAgent instance. Passing an instance will set it; passing no arguments will retrieve it. If no previous instance has been registered, one will be lazy-loaded using defaults. setUserAgent Zend_Http_UserAgent $userAgent If you have an instance of the helper -- for instance, by calling the view object's getHelper() method -- you may use this method to set the UserAgent instance. getUserAgent Retrieves the UserAgent instance; if none is registered, it will lazy-load one using default values.