Today's date is
{nocache}
{$smarty.now|date_format}
{/nocache}

   

以上代码会在缓存页面上输出当前日期。

Today's date is
{$smarty.now|date_format nocache}

    

// assign $foo as nocahe variable
$smarty->assign('foo',time(),true);


Dynamic time value is {$foo}

    

<?php
$smarty->setCaching(Smarty::CACHING_LIFETIME_CURRENT);

function remaining_seconds($params, $smarty) {
    $remain = $params['endtime'] - time();
    if($remain >= 0){
        return $remain . ' second(s)';
    }else{
        return 'done';
    }
}

$smarty->registerPlugin('function','remaining', 'remaining_seconds', false, array('endtime'));

if (!$smarty->isCached('index.tpl')) {
    // fetch $obj from db and assign...
    $smarty->assignByRef('obj', $obj);
}

$smarty->display('index.tpl');
?>

   

其中 index.tpl 为

Time Remaining: {remaining endtime=$obj->endtime}

   

每次显示页面时，剩余时间 $obj 结束的时间秒数都会更改，即使页面已缓存。由于 endtime 属性已缓存，因此只有在页面写入缓存时才需要从数据库中提取对象，但在后续页面请求中则不需要。

index.php:

<?php
$smarty->setCaching(Smarty::CACHING_LIFETIME_CURRENT);

function smarty_block_dynamic($param, $content, $smarty) {
    return $content;
}
$smarty->registerPlugin('block','dynamic', 'smarty_block_dynamic', false);

$smarty->display('index.tpl');
?>

   

其中 index.tpl 为

Page created: {'0'|date_format:'%D %H:%M:%S'}

{dynamic}

Now is: {'0'|date_format:'%D %H:%M:%S'}

... do other stuff ...

{/dynamic}