I hope I'll be forgiven for having one last try... :^)

1. If you are paranoid about it, then include code that explicitly checks whether the value returned by param() is defined.
   1. I don't consider it paranoid to validate user input. This is no different that the whole purpose of taint checking.
   2. This goes back to what I said a couple of iterations back. Using the || operator (which is undeprecated as far as I know ) serves the purpose of simplifying and clarifying the code, and removing the need to used defined twice (or more) on each parameter.
   3. What's wrong with cleaner, simpler code?
2. If you aren't paranoid about it, then don't write any specific handling for it and let perl spew out some warnings.

   Sounds like a possible DoS attack in the making.

   Whilst I've never heard of it being done in this particular way--and my attempts at seeing what would happen on my local Apache server where foiled by simply not being able to generate enough queries fast enough as the user agent and the webserver were always competing for cpu and were therefore self limiting--but it wouldn't be the first time that causing logs to fill/overflow or simply sapping the horsepower of the server by causing it to generate gobs of useless warnings has been used to bend or break a server.

3. If you don't care at all, turn off warnings.

   That is probably what I would do, locally, for the duration of the untaining of the parameters and validation that I had them all.

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Cor! Like yer ring! ... HALO dammit! ... 'Ave it yer way! Hal-lo, Mister la-de-da. ... Like yer ring!

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