run code in 200+ php & hhvm versions
Bugs & Features
<?php $buffer = <<<XML <?xml version="1.0"?> <!DOCTYPE foo [ <!ELEMENT foo ANY > <!ENTITY xxe SYSTEM "data://text/html,aaaa" >]><foo>&xxe;</foo> XML; libxml_disable_entity_loader(true); $xml = simplexml_load_string($buffer); var_dump($xml); echo "trying New SimpleXMLElement($xml)"; $xml = new SimpleXMLElement($buffer); var_dump($xml); echo 'Enabling LIBXML_NOENT for test reasons'; $xml = simplexml_load_string($buffer, 'SimpleXMLElement', LIBXML_NOENT); var_dump($xml);
based on rXQOo

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).
Note: hhvm uses a JIT which only kicks in after a few runs. Since we run scripts only once, hhvm always runs slower.

VersionSystem time (s)User time (s)Memory (MiB)