eval string, from a mod_perl guy! I'd be shocked, if I didn't think you had a good reason. :)
I'd still prefer subrefs, can, and maybe even some symbolic references with map:
%commands = map { $_ => \&{ $_ } } keys %commands;
Season to taste.
Update: Not that eval is slow, but that eval string has some memory leaks not fixed until 5.8. That can be nasty in mod_perl.
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