Anonymous

<?php

$xml =<<<EOXML
<!DOCTYPE doc [
 <!ENTITY five "<five value='5'/>">
]>
<one>
 <two value="2" />
 <three value="3">
  <four value="4"/>
  &five;
 </three>
</one>
EOXML;

$sXML = simplexml_load_string($xml, NULL, LIBXML_NOENT);
echo $sXML->asXML();

?>