php array to xml (multi/single levels)

<?php

    // multi/signel converter array to xml
    // example: https://imgur.com/a/LsQY8A7

    function printResponse($data)
    {
        $xml = new DOMDocument();

        $root = $xml->appendChild($xml->createElement('root'));
        $response = $root->appendChild($xml->createElement('response'));

        arrayToXml($xml, $response, $data);

        header("Content-Type: text/plain");
        $xml->formatOutput = true;

        die($xml->saveXml());
    }

    function arrayToXml($xml, $root, $data)
    {
        foreach($data as $key => $item)
        {
            if(is_array($item))
                arrayToXml($xml, $root->appendChild($xml->createElement($key)), $item);
            else
                $root->appendChild($xml->createElement($key, $item));
        }
    }

?>