You could quite easily get a list of all the parameters except 'submit' thusly: 
#!/usr/bin/perl -w

use strict;
use CGI;

my $query = new CGI;
my @params = grep {$_ ne 'submit'} $query->param;

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In reply to Re: Unwanted CGI by kilinrax
in thread Unwanted CGI "Submit" Parameter by Anonymous Monk

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