Kush, I really want to help you on this, I am the engineer that worked on the php library you can find on the google code site. We are using the MySpaceID library for a number of purposes; and of those purposes we use the library quite successfully for some of our own projects, projects with partners...

I have added a new request mechanism to the http://code.google.com/p/myspaceid-php-sdk if you checkout the _dev branch you should be able to use it. Let me know if you have any problems, we are testing it internally now, and it seems to work.