Smarty标签 for运算

$select="SELECT {$col_name} FROM woke_order where  deleted=0 ".$where.$orderby ;

// 取出数组
$rows=array();
$result=$db->query($select);
while($row=$db->fetch_array($result))
{
　　$rows[]=$row;

}

$smarty->assign('rows',$rows);

$smarty->display('GridView_TaskList.tpl');//显示模板

<table>
    <{foreach $rows as $k=>$v}> 

        <tr <{if $v@first}> bgcolor="blue" <{/if}>  >
            <td><{$v@iteration}> </td>
            <td><{$v.contact_name}> </td>
            <td><{$v.date_entered}> </td>
        </tr>
    <{/foreach}>
</table>