AJAX can be used for interactive communication with an XML file. A web page can fetch information from an XML file with AJAX technology, e.g when you select an item from a dropdown box.

TITLE: One night only
ARTIST: Bee Gees
COUNTRY: UK
COMPANY: Polydor
PRICE: 10.90
YEAR: 1998

The PHP script loads an XML document, "cd_catalog.xml", runs a query against the XML file, and returns the result as HTML:

[code]

<?php
$q=$_GET["q"];
$xmlDoc = new DOMDocument();
$xmlDoc->load("cd_catalog.xml");
$x=$xmlDoc->getElementsByTagName('ARTIST');