index.php:

$smarty = new Smarty;
$smarty->assign('Contacts',
    array('fax' => '555-222-9876',
          'email' => 'zaphod@slartibartfast.com',
          'phone' => array('home' => '555-444-3333',
                           'cell' => '555-111-1234')));
$smarty->display('index.tpl');

index.tpl:

{$Contacts.fax}<br>
{$Contacts.email}<br>
{* you can print arrays of arrays as well *}
{$Contacts.phone.home}<br>
{$Contacts.phone.cell}<br>

OUTPUT:

555-222-9876<br>
zaphod@slartibartfast.com<br>
555-444-3333<br>
555-111-1234<br>