Clean-up of variables and other PHP notices

[Mark Summerville (mark (dot) summerville (at) zoom (dot) co.uk]

There are a number of small suggested changes in the thread at http://plogger.org/forum/discussion/1833/undefined-variables-and-indices

I'm just opening this issue to track them, so that they don't get forgotten.

Sorry that I've somewhat monopolised the thread. I'm new to PHP and need to keep the logging up high to find the mistakes I'm making in my code. In my experience in other languages then keeping the warnings visible allows you to find more bugs first time around.

[sidtheduck]

Hopefully all were caught in r536

[anonymous]

Have checked out the latest r536 and it all looks good.

[sidtheduck]

All instances I have found have been updated as of r538. May need additional testing by people to determine if every instance taken care of.

[sidtheduck]

Okay, I really think I have all of the undefined variables and indices cleared up as of r546 + r547 (AFAIK). I'm going to close this ticket and we can re-open if any more are found.