However (from my CGI.pm),
NOTE: As of version 1.5, the array of parameter names returned will be
in the same order as they were submitted by the browser. Usually this
order is the same as the order in which the parameters are defined in
the form (however, this isn't part of the spec, and so isn't
guaranteed).
I don't think you can rely 100% on this behaviour, especially if you are going to submit foo_1, bar_1, foo_2, bar_2, etc.
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