Warning, do not use this library. This project currently does not have a maintainer.
Obviously, if this changes, the new maintainer should close this issue.
Please see the following thread for justification:
Recommend that you consider using the PEAR package which does appear to be maintained at this point: http://pear.php.net/package/OpenID
I use a "heavily" modified version of this library (supports most recent OpenID standards). I've strongly considered forking this and apply to take over maintainer-ship.
Why is this still open if there's a bunch of recent commits?