What might be nice is a patch to PHP4 that provides a bit in
error_reporting
that would cause warnings on stuff that might break on a move to PHP5.
Someone could then switch it on and look at what is logged. I suspect that
many people would also be pleasantly surprised that 4 -> 5 is not as hard
as it seems.
I think this is a good idea but might be hard to implement.... thinking
about it couldn't we do something along these lines in userspace? IOW create
a script which parses php files and flags up possible issues?
Regards
Marco