This is a technique that I use, either using hidden fields as you describe or passing flags in PATH_INFO.

However, I would use a hash instead of your @safesubs and $ok: 

my %valid = map {$_ => undef} qw(this_sub that_sub other_sub);
die unless exists $valid{$op};
&$op();

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In reply to Re: Re: CGI: Make one big program or lots of little ones? by tomhukins
in thread CGI: Make one big program or lots of little ones? by Anonymous Monk

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