index.php:

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

index.tpl:

{$Contacts[0]}<br>
{$Contacts[1]}<br>
{* you can print arrays of arrays as well *}
{$Contacts[2][0]}<br>
{$Contacts[2][1]}<br>

OUTPUT:

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