Thanks all in here - especially Chris D - I've managed to get the forum user id onto an external php page. The world is now my lobster... or something...
Been trying to get something to work that will enable me to check that a forum member is logged in and display their user id. That's all I wanted to do as a test.
However, I simply cannot get any of this to work and I've tried all the different methods mentioned in this thread (and others).
I...