you can use XML to send data to any other program, running on the same computer or other server/computer.
The function of XML is similar to CSV files but is more readable, structured and etc etc.
Before you can use(Parse) XML in your PHP you need a PHP library for XML installed on your server.
for PHP 4 you can use DOMXML(
http://php.net/manual/en/book.domxml.php)
for PHP 5 you can use DOM(
http://www.php.net/manual/en/book.dom.php)
you can ask your hosting if the library is installed or refer to
http://uk.php.net/manual/en/function.phpinfo.php for more information.
Kind regards,