Connecting to the GAL with PHP

[jimbojames5645]

I am currently trying to develop a tool in php on linux that can extract user information from active directory. As it stands now, using the php LDAP functions, I am able to connect to an AD server and extract information. This works for the most part, however there are users that show up in the Outlook global address book, that do not show up in AD LDAP. Also if they do show up, their email address does not always come up, whereas again it comes up in Outlook.

Is there any way to connect to the global address book directly via php? I want to be able to find any email address that is currently in the address book.