$VAR1 = '1';
$VAR2 = {
          'host' => {
                      'hosta' => 1
                    },
          'name' => 'servicea'
        };
$VAR3 = '2';
$VAR4 = {
          'host' => {
                      'host0' => 2,
                      'host5' => 2
                    },
          'name' => 'serviceb'
        };

##</code><code>##

$VAR1 = {
          'name' => 'servicea',
          'host' => [
                    {
                      'hosta' => '2'
                    },
                    {
                      'hostb' => '2'
                    }
                  ]


##</code><code>##

<?xml version='1.0'?>
<services>
<name>servicea</name>
<host>
        <hosta>2</hosta>
</host>
<host>
        <hosta>2</hosta>
</host>
</services>