Handle IRIs with Zend_Uri

gistfile1.php

    /**
     * Converts to a Zend_Uri object
     * @protected
     * @static
     * @param string $s
     * @return Zend_Uri
     */
    protected static function uri($s)
    {
        if (!empty($s)) {
            Zend_Uri::setConfig(array('allow_unwise' => true));
            $ignore =  Zend_Uri_Http::CHAR_ALNUM;
            $ignore .= Zend_Uri_Http::CHAR_MARK;
            $ignore .= Zend_Uri_Http::CHAR_RESERVED;
            $ignore .= Zend_Uri_Http::CHAR_SEGMENT;
            $s =  preg_replace('{([^'. $ignore . '])}e', 'sprintf("%%%02X", ord("$1"))', $s);
            return Zend_Uri::factory($s);
        }
    }