package testlib;
our $var = "Lord only knows if this will work...";
1;

##</code><code>##

# testlib.pm
package testlib;

use strict;
our @EXPORT = qw( $var ); #place all the variables you want to export by default in here (c.f. @EXPORT_OK)
use Exporter;
our @ISA = qw(Exporter);

our $var = "Lord only knows if this will work...";
1;

##</code><code>##

#!/usr/bin/perl -w
# test.pl
use strict;
use CGI::Carp qw(fatalsToBrowser warningsToBrowser);
use CGI ':standard';

use testlib; # will automagically import $var into current namespace

print "Content-type: text/html\n\n";
print $var;

exit;