{foreach array(1,2) as $i}
{$i}
{/foreach}

{var $array = array(1,2)}
{foreach $array as $i} 
{$i}
{/foreach}

{foreach 1..2 as $i}
{$i}
{/foreach}

{foreach array_fill_range(1,2) as $i}
{$i}
{/foreach}