Active Directory Token / PHP

[Centinul]

My environment is setup like this:

 

Windows Server 2003

Active Directory 2003

IIS 6.0

PHP 5.1.6

 

When a user tries to hit my system they are prompted for an Active Directory username / password combination. If their information is correct they get to the application. I need to modify the application code to check if the users password is about to expire.

 

IIS can  be configured to pass a token to the application.

 

How would I use PHP to read the contents of this token so I can query AD?

 

Thanks,

 

Centinul