Zend Framework:如何从URL中删除请求参数?

我试过这样做,但没有成功:

$params = $this->_getAllParams();

if (!empty($params['active-tab'])) {
    //do something with $params['active-tab'] before removing it
    //then...
    unset($params['active-tab']);
    $this->_request->setParams($params);
}

我想Zendèu的请求并不像我想的那样有效。下面是我想出的解决方案:

$params = $this->_getAllParams();

if (!empty($params['active-tab'])) {
    //do something with $params['active-tab'] before removing it
    unset($params['active-tab']);
    $this->_helper->redirector($params['action'], $params['controller'], $params['module'], $params);
}