- var_dump: documentation ( source)
<?php
$dom = new SimpleXMLElement('<?xml version="1.0"?>
<!DOCTYPE results [
<!ENTITY harmless
"php://filter/read=convert.base64-encode/resource=/var/www/index.php"
>
]>
<results>
<result>I am &harmless; - honest!</result>
</results>');
var_dump($dom);