Since the keys are always strings, I can't see how $browser->{user_agent} works.

Did I miss something here?

Ah, ok. So what I need to do to make it work is:

foreach my $browser ( %{$data->{devices}->{device}} ) {
  print "$data->{devices}->{device}->{$browser}->{user_agent}<br>";
}
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I think that is an improvement on where I started as it goes into the heart of the data structure rather than disassembling it. However perhaps there is more that can be done?

Update:The inclusion of values in jethro's update effectively fixes the problem, the solution direct and concise.

That's what I was looking for - much more direct!! Thanks very much.

Update: Unfortunately including it in the code prints a blank! It makes sense to me looking at it - what has gone wrong???

Update2:The inclusion of values in jethro's update effectively fixes the problem.

#!/usr/bin/perl -w
use strict;

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

# use module
use XML::Simple;
use Data::Dumper;
use LWP::Simple;

my $url = 'http://wurfl.sourceforge.net/web_browsers_patch.xml';

my $content = get($url);

# create object
my $xml = new XML::Simple;

# read XML file
my $data = $xml->XMLin($content);

my @agents;

foreach my $browser ( %{$data->{devices}->{device}} ) {
  push @agents, $browser->{user_agent};
}

print @agents;
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