Smarty單頁多個緩存

<?php
require('Smarty.class.php');
$smarty = new Smarty;

$smarty->setCaching(Smarty::CACHING_LIFETIME_CURRENT);

$my_cache_id = $_GET['article_id'];

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

<?php
require('Smarty.class.php');
$smarty = new Smarty;

$smarty->setCaching(Smarty::CACHING_LIFETIME_CURRENT);

$my_cache_id = $_GET['article_id'];

if(!$smarty->isCached('index.tpl',$my_cache_id)) {
    // 沒有緩存，這里將進行一些賦值操作
    $contents = get_database_contents();
    $smarty->assign($contents);
}

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

<?php
require('Smarty.class.php');
$smarty = new Smarty;

$smarty->setCaching(Smarty::CACHING_LIFETIME_CURRENT);

// 刪除$cache_id為"sports"的全部緩存
$smarty->clearCache(null,'sports');

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