I'm in the process of modularizing a multi-script website. After reading thought some of the tutorials, I thought I understood variable scoping but maybe I'm missing something. In the code snippet below, I want to use global variables, declared in a module, in a second module but found that I needed to include the package name for each global variable.

This seems to work, but am I doing it right way? 

## Header.pm
package Header;
use strict;
use DBI;
use Exporter;
use vars qw(@ISA @EXPORT);
@ISA = qw(Exporter);
@EXPORT = qw($dbh $userID);
our $dbh = DBI->connect('DBI:mysql:database'....);
our $userID;
1;

## Some_subs.pm
package Some_subs;
use strict;
use Exporter;
use vars qw(@ISA @EXPORT);
@ISA = qw(Exporter);
@EXPORT = qw(get_data());
sub get_data {
    my $sql = "select * from table where id=$Header::$userID";
    return $Header::dbh->selectrow_array($sql);
}
1;

## main ##
use strict;
use Header;
use Some_subs;
$userID = 1;
my $data = &get_data();

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update: Hyphen to underscore. Thanks chromatic
Also corrected the exported variable list

In reply to Using our $variables across modules by nedals

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