Horde_Oauth_Request::getSignatureBaseString PHP Method

    public function getSignatureBaseString()
    {
        $parts = array($this->_getNormalizedHttpMethod(), $this->_getNormalizedUrl(), $this->_getSignableParameters());
        return implode('&', array_map(array('Horde_Oauth_Utils', 'urlencodeRfc3986'), $parts));
    }