I am looking for an already completed openid login library that I can just \'plug\' into my application and allow for access using any of the openid, facebook, twitter, meth
There are a few open source projects that are active on github and google code.
http://github.com/openid/php-openid
But that is as simple as it gets unless you are already using a created framework like Kohana or Cake or whatever. IF you are using one of those, chances are they have worked on a module for OAuth and FB / TW / OID stuff. I prefer Kohana, and they have many great modules.