如何使用thinkPHP遍历数组？

array(
 array(
  'id'=>1,
  'username'=>'mgckid',
  'sex'=>1
 )
 array(
  'id'=>2,
  'username'=>'yezi',
  'sex'=>0
 )
)

<volist name='data' id='vo'>
 <{$vo.id}>---------<{$vo.username}>-----------<{$vo.sex}><br/>
</volist>

1---------mgckid-----------1
2---------yezi-----------0

{dede:arclist typeid='20' row='5' titlelen='40'}
 [field:title/] [field:arcurl/] [field:pubdate/] [field:infos/] [field:writer/]
{/dede:arclist}