my @expected = qw( title requester department etc );
my @request;
foreach my $expect (@expected) {
	push @request, ($q->param($expect) or '0');
}

##</code><code>##

foreach my $expect (@expected) {
	my $received = $q->param($expect);
	unless (defined $received) {
		$error .= "Didn't get $expect parameter!\n";
		last;		# and do an error somewhere
	}
	push @request, $received;
}