Conflicting global variables

[eluser]ixxalnxxi[/eluser]
Hello All,

I am trying to do cross-site sessions with phpbb3 and my site so that the login is only performed once. However trying to accomplish this has been a headache. It seems when I am using working code inside of CI I get errors which I believe are due to same global variables. What can I do to avoid this?

I have read the forums here and at phpbb3 and there were others that brought up this problem but there was no solution.

Thanks.