Missing XMLReader in my PHP version?

Question

I'm trying to use the WURFL API for PHP. I'm getting the following error during its initialization.

Fatal error: Class 'XMLReader' not found in /var/www/html/wurfl-api/WURFL/Xml/AbstractIterator.php on line 89

my version of PHP when I run php -v:

PHP 5.3.3 (cli) (built: Jul 22 2010 16:21:30) 
Copyright (c) 1997-2010 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies

Why do you think I am getting this error? Is my version of PHP outdated?

Thank you!

Answer 1

You have no XML extention installed. In RedHat like systems type yum install php53-xml in terminal. Or you can simply add phpinfo(); to your PHP code to rewiew your server configuration and find wether XML installed or not.