convert php array to xml | unity3d

<?php

    include_once('db.class.php');

    $connInfo = array('user' => '', 'pass' => '', 'host' => '', 'name' => '');

    $db = new Db($connInfo);

    function printResponse($status, $data)
    {
        $xmlDoc = new DOMDocument();
        $xmlDoc->encoding = 'UTF-8';

        $root = $xmlDoc->appendChild($xmlDoc->createElement('root'));

        $root->appendChild($xmlDoc->createElement('status', $status));

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

        foreach($data as $key => $val)
            $infoBl->appendChild($xmlDoc->createElement($key, $val));

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

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

    function printListResponse($status, $data, $itemTitle)
    {
        $xmlDoc = new DOMDocument();

        $root = $xmlDoc->appendChild($xmlDoc->createElement('root'));
        $root->appendChild($xmlDoc->createElement('status', $status));

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

        foreach($data as $item)
        {
            $el = $items->appendChild($xmlDoc->createElement($itemTitle));

            foreach($item as $key => $val)
                $el->appendChild($xmlDoc->createElement($key, $val));
        }

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

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

    // example: https://imgur.com/a/qtsLMhE

?>