While using CGI.pm is a good thing, you still made it more complicated than it should be, at least if you ask me ... 
use strict;
use CGI;

my $q = new CGI;
my $form = $q->Vars();

if(exists $form->{parameter_name}){
   #do whatever
}

[download]
Of course, you can also use Data::FormValidator. It's suggested if you need more complicated form validation.

In reply to Re^3: Is $formdata present? by techcode
in thread Is $formdata present? by ecuguru

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