encoding.php
protected function encode()
    {
        $statements = array();
        foreach ($this->request as $pair) {
            if ($statement = $pair->asRequest()) {
                $statements[] = $statement;
            }
        }

        return implode('&', $statements);
    }
protected function encode()
    {
        $statements = array();
        foreach ($this->request as $pair) {
            if ($statement = $pair->asRequest()) {
                $statements[] = $statement;
            }
        }

        return implode('&', $statements);
    }
Renders the query string as a URL encoded request part.

@return string        Part of URL.