Thanks, yes, I had seen that. Using that code would require incorporating the PHP SDK library into Tiki. That's a bigger decision to be made based on how widely it would be used in Tiki, benefits over other alternatives, etc.
I do see that we use zendoauth for the Twitter interface, which is somewhat similar to what you are seeing in the PHP SDKs. I will try that first since that is already bundled with Tiki.