public function checkuserAction() { $this->_helper->viewRenderer->setNoRender(); $userid = $this->getRequest()->getParam('username'); $user = new Application_Model_Users($this->registry['DB']); if ($user->checkUser($userid)) { $this->getResponse()->setBody(json_encode(array('status' => 'true'))); } else { $this->getResponse()->setBody(json_encode(array('status' => 'false'))); } }