3v4l.org

run code in 300+ PHP versions simultaneously
<?php $xml = <<<XML <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE foo [ <!ELEMENT foo ANY > <!ENTITY xxe SYSTEM "http://ss23.geek.nz/viper-test.txt" > ]> <foo>&xxe;</foo> XML; $x = new DOMDocument(); $x->loadXML($xml); foreach ($x->getElementsByTagName('foo') as $u) { var_dump($u->nodeValue); }
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(0) ""
preferences:
233.09 ms | 404 KiB | 406 Q