Author & Content by Tim Haselaars (http://www.trinix.be)
As you might have noticed on Centos 5.0, there is no PHP-MSSQL module/extension available in the default yum repositories. So if you want to use it you can alter the PHP binary or you can compile an mssql module/extension. In this article I will explain how to compile the mssql module/extension.
You need to activate the RPMForge custom repository (formely known as Dag Wieers): http://dag.wieers.com/rpm/packages/rpmforge-release/