Plogger Gallery Admin上的Duo Security(双因素身份验证)PHP SDK

I'm looking for some much needed help in setting up Duo Secuirty's PHP Web SDK for two-factor authentication for my Plogger gallery's admin section. I've tried several approaches, but the documentation is very sparse, and somewhat incomplete.

I cannot post my exact attempts here for obvious security reasons, but I just need a general outline of how to modify the original login page code to get duo two-factor authentication working on my admin section.

Any help will be much appreciated!

Plogger can be found - HERE

I'm using version : 1.0 RC1

Thanks in Advance!

-James A.