xmlify array (with CDATA) imho a nifty way to convert an array to an XML string =)

xmlify.php

<?php
// Convert n-dimensinal array to xml style string & wrap CDATA.
function xmlify($arr)
{
    $str = null;

    foreach ($arr as $k => $v) {
        if (is_array($v)) {
            $str .= "<$k>" . xmlify($v) . "</$k>";
        } else {
            if (preg_match('#[<>&\?\']#', $v, $m)) {
                $v = '<![CDATA[' . $v . ']]>';
            }
            $str .= "<$k>" . $v . "</$k>";
        }
    }

    return $str;
}