simplexml_load_file: load xml and output
<?php
$xml = simplexml_load_file("books.xml");
echo htmlspecialchars($xml->asXML());
?>
<!--
<library>
<book>
<title>A</title>
<author gender="female">B</author>
<description>C</description>
</book>
<book>
<title>C</title>
<author gender="male">D</author>
<description>E</description>
</book>
<book>
<title>F</title>
<author gender="male">G</author>
<description>H</description>
</book>
</library>
-->
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