php十行代码将xml转成数组

<?php
header("Content-Type:text/html;charset=utf-8");
function xml2array($filename){
$xml = @simplexml_load_file($filename);
//返回数组
if(is_object($xml)){
$xml = json_encode($xml);
$xml = json_decode($xml, true);
}
if(!is_array($xml)) $xml = null;
return $xml;
}

$path = 'f.xml';
echo '<pre>';
var_dump(xml2array($path));

?>