HowTo Forge has a new tutorial posted on installing a Lighttpd web server on a Mandriva linux system and including PHP and MySQL support:

Lighttpd is a secure, fast, standards-compliant web server designed for speed-critical environments. This tutorial shows how you can install Lighttpd on a Mandriva 2008.0 server with PHP5 support (through FastCGI) and MySQL support. I do not issue any guarantee that this will work for you!

Thanks to the urpmi package manager in Mandriva, installation of the software is just a matter of a few simple "install" calls. There's a little bit to configure - the MySQL credentials and the php.ini file - but it's a quick and easy setup for your system.