Custom Zend Framework Url Helper (honors existing query string -- works well for pagination links, etc.)

Url.php

<?php
/**
 * @copyright   ...
 * @author      Wil Moore III <[email protected]>
 */

use Zend_View_Helper_Url as Url;

/**
 * View Helper to attach a query-string to URL
 * Inspired by: (Hector Virgen)
 *              http://zend-framework-community.634137.n4.nabble.com/Generating-URL-s-View-Helper-Action-Helper-tp3002936p3004194.html
 * Also see   : http://framework.zend.com/issues/browse/ZF-11042?focusedCommentId=46896#comment-46896
 *
 * @copyright   ...
 * @author      Wil Moore III <[email protected]>
 */
class m3_core_view_helper_Url extends Url {

    /**
     * Proxies to Zend_View_Helper_Url and honors any existing query string
     * NOTE: If $reset evaluates to true, the query string will not be added
     * 
     * You will need to add to your application.ini:
     * resources.view.helperPath.m3_core_view_helper  = SOURCE_PATH "/library/m3/core/view/helper"
     * or for ZF2
     * resources.view.helperPath.m3\core\view\helper\ = SOURCE_PATH "/library/ets/core/view/helper"
     *
     * @access  public
     *
     * @param   array   $urlOptions
     *                  Options passed to the assemble method of the Route object.
     * @param   mixed   $name
     *                  The name of a Route to use. If null it will use the current Route
     * @param   bool    $reset
     *                  Whether or not to reset the route defaults with those provided
     *
     * @return  string  Url for the link href attribute.
     */
    public function url(array $urlOptions = array(), $name = null, $reset = false, $encode = true, $includeQueryString = true) {
        // get the same URL that the intrinic URL helper would get
        $url = parent::url($urlOptions, $name, $reset, $encode);

        // get query-string
        $query = parse_url(urlencode($this->getRequestUri()), \PHP_URL_QUERY);

        // if there is no query string or 
        return empty($query) || $reset
             ? $url
             : sprintf('%s?%s', $url, $query);
    }

    /**
     * Retrieves the requested URI
     *
     * @access  protected
     * @return  string
     */
    protected function getRequestUri() {
        return \Zend_Controller_Front::getInstance()->getRequest()->getRequestUri();
    }

}