Thanks for the reply, that would work for my example, but I should have explained that I don't actually know the value of ID all the time, so infact my structure might look more like this:

$urls{'networkid'}{'someidIdontknow'}='somevalue1';
$urls{'networkid2'}{'someidIdontknow2'}='somevalue2';
$urls{'networkid3'}{'someidIdontknow3'}='somevalue3';
[download]

So unfortunately I can't access the value I don't know directly, but need a means to loop through all the values.

From looking at the post above I now have this code but it doesn't work.

foreach my $network (keys %urls) {
    foreach my $key (keys %$network) {
        print "$key<br/>";
    }
}
[download]

Any ideas where i'm going wrong? I know it's something to do with accessing the hashref.

Cheers, Tom

foreach my $network (keys %urls) {
    foreach my $key (keys %{$urls{$network}}) {
        print "$key<br/>";
    }
}
[download]

or

foreach my $network (values %urls) {
    foreach my $key (keys %$network) {
        print "$key<br/>";
    }
}
[download]