Contao\DataContainer::combiner PHP Method

    protected function combiner($names)
    {
        $return = array('');
        $names = array_values($names);
        for ($i = 0, $c = count($names); $i < $c; $i++) {
            $buffer = array();
            foreach ($return as $k => $v) {
                $buffer[] = $k % 2 == 0 ? $v : $v . $names[$i];
                $buffer[] = $k % 2 == 0 ? $v . $names[$i] : $v;
            }
            $return = $buffer;
        }
        return array_filter($return);
    }