PHP - XML: Read from a File

PHP XML Tips - Part 2: This post show to us how to read xml from a file. We can use simplexml_load_file() file this:
1    <?php
2    $xml = simplexml_load_file("books.xml")
3           or die("Error: Cannot create object");
4   
5    ?>

Before test it, create a file named "books.xml".
01    <?xml version="1.0"?>
02    <datas>
03      <books>
04        <book>
05          <id>1</id>
06          <title>PHP Undercover</title>   
07          <author>Wiwit Siswoutomo</author>
08        </book>
09        <book>
10          <id>2</id>
11          <title>PHP Enterprise</title>   
12          <author>Wiwit Siswoutomo</author>
13        </book>
14      </books>
15    </datas>