“Integrating Active Directory with PHP” – can this be done with WordPress??

Hello,
I recently read this article:
https://www.developer.com/lang/php/article.php/3100951
…and was wondering if this is something that could be done with WordPress. I am working at an office that is a Windows shop, and makes heavy use of Active Directory, but we also have some open source php mysql solutions (wiki, bb, blog) that I fear will be scrapped as they want to integrate everything with Active Directory… Which means they will end up going with non-compliant Sharepoint or some other Microsoft non-compliant solution. Unfortunately, there really is no blog or CMS software out there that I can find that creates W3C compliant web sites, and integrates with Active Directory authentication. I am not much of a programmer, and wouldn’t know where to start on something like this, but if anyone has suggestions, they would be greatly appreciated.
Thanks