How to display XML content using php

This is the sample XML structure,

<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet type="text/xsl" href="loaned.xsl"?>
<catalogue>
    <resource>     
        <book>
            <ID>1</ID>
            <title>Art of living</title>
            <date>10/10/2011</date>
            <retdate>30/10/2011</retdate>
            <SID>Chandresh</SID>
        </book>
        <book>
            <ID>2</ID>
            <title>Experiment with Truth</title>
            <date>1/10/2011</date>
            <retdate>15/10/2011</retdate>
            <SID>Dipender</SID>
        </book>
    </resource>
</catalogue>

Code to display XML using php:
<?php
$doc = new DOMDocument();
$doc->load( 'loaned.xml' );
 
$booklist = $doc->getElementsByTagName( "book" );
//$len = $musiclist->length;
foreach( $booklist as $book )
{

 //$sno = $song ->index[];
  $bookids = $book->getElementsByTagName( "ID" );
  $bookid = $bookids->item(0)->nodeValue;
 
  $booktitles= $book->getElementsByTagName( "title" );
  $booktitle = $booktitles->item(0)->nodeValue;
 
  $dates= $book->getElementsByTagName( "date" );
  $date= $dates->item(0)->nodeValue;
 
  $retdates = $book->getElementsByTagName( "retdate" );
  $retdate = $retdates->item(0)->nodeValue;
 
  $sids = $book->getElementsByTagName( "SID" );
  $sid = $sids->item(0)->nodeValue;
 
  echo "<b>$bookid - $booktitle - $date - $retdate - $sid - <a href=\"delete.php?bid=$bookid\">X</a> - <a href=\"modify.php?bid=$bookid\">Modify</a>\n</b><br>";
}
?>

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