> I register a clean up handler to explicitly untie the session variable.
I have found that it's safer to put things in pnotes than to use globals and cleanup handlers. We used a lot of cleanup handlers at eToys to clear globals holding various request-specific things, and we started getting unpredictable segfaults. When I moved them to pnotes instead the segfaults went away. I think it may have had something to do with cleanup handlers running in an unpredictable order and some of them trying to use things that were already cleaned up, so it was probably my fault, but pnotes just seems a bit more foolproof. - Perrin
