问php对无效标记的简单xml解析问题

EN

<?php

$xmlstr = <<<XML
<?xml version='1.0' standalone='yes'?>
<movies>
 <movie>
  <title>PHP: Behind the Parser</title>
  <characters>
   <character>
    <name>Ms. Coder</name>
    <actor>Onlivia Actora</actor>
    <actor:view id='44' />
   </character>
   <character>
    <name>Mr. Coder</name>
    <actor>El Act&#211;r</actor>
    <actor:view id='49' />
   </character>
  </characters>
  <plot>
   So, this language. It's like, a programming language. Or is it a
   scripting language? All is revealed in this thrilling horror spoof
   of a documentary.
  </plot>
  <great-lines>
   <line>PHP solves all my web problems</line>
  </great-lines>
  <rating type="thumbs">7</rating>
  <rating type="stars">5</rating>
 </movie>
</movies>
XML;


 $simpleXml = new SimpleXMLElement($xmlstr);

 var_dump((array) $simpleXml);