xml2array/xmlencode in PHP

xml-utils.php

<?php

function xml_decode($input) {
	return current(xml2array(simplexml_load_string($input)));
}

function xml2array($xml) {
	$arr = array();
	foreach ($xml->children() as $r) {
		$t = array();
		if (count($r->children()) == 0) {
			$arr[$r->getName()] = strval($r);
		} else {
			$arr[$r->getName()][] = xml2array($r);
		}
	}
	return $arr;
}

function xml_encode($array, $root = 'elements', $xml = null) {
	if ($xml === null) $xml = new SimpleXMLElement('<'.$root.'/>');
	$sroot = preg_replace('~s$~', '', $root);
	foreach ($array as $key => $value) {
		if (is_array($value) || is_object($value)) {
			$skey = is_numeric($key) ? $sroot : $key;
			xml_encode($value, $skey, $xml->addChild($skey));
		} else {
			if (!is_numeric($key)) {
				$xml->{$key} = $value;
			} else {
				$xml->{$sroot} = $value;
			}
		}
	}
	return $xml->asXML();
}