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run code in 300+ PHP versions simultaneously
<?php $xml = <<<EOT <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE test [<!ENTITY xxe SYSTEM "http://exploited.cz/robots.txt">]> <foo>&xxe;</foo> EOT; libxml_disable_entity_loader(false); $x = simplexml_load_string($xml); // $x = simplexml_load_string($xml, null, LIBXML_NOENT); var_dump((string)$x);

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