CroogoNav::_merge PHP Method

    protected static function _merge($firstArray, $secondArray)
    {
        $merged = Hash::merge($firstArray, $secondArray);
        foreach ($merged as $key => $val) {
            if (is_array($val) && is_int(key($val))) {
                $merged[$key] = array_unique($val);
            }
        }
        return $merged;
    }