循环依次递增+1
<!-- {foreach from=$comments item=comment name=comment} -->
{$smarty.foreach.comment.iteration}
<!-- {/foreach} -->
循环依次递增+1(初始值从1开始)
<!-- {foreach from=$comments item=comment name=comment} -->
{$smarty.foreach.comment.index}
<!-- {/foreach} -->
循环依次递增+1(初始值从0开始)
判断循环次数
<!-- {foreach from=$promotion_info item=item name=name} -->
{if $smarty.foreach.name.iteration <= 5}{/if}
<!-- {/foreach} -->