php使用simplexml_load_file加载XML文件并显示XML的方法

<?php  $xml = simplexml_load_file("sample.xml");  echo htmlspecialchars($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>