Is there a good tutorial for implementing OpenId and OAuth together in PHP? All of the OpenId tutorials I've seen on the official OpenId site haven't been as helpful or as simple as they could have been. I don't think I've seen any tutorials on using both of them together. (For OpenId, I'd want to be both a provider and a consumer.) If there are no tutorials for using them together, tutorials on implementing either one in PHP would also be helpful.