3-3 footer.php

<?php
// 將變數送到Smarty樣板檔
$smarty->assign('page_title', $page_title);
$smarty->assign('header', $header);
$smarty->assign('navbar', $navbar);
$smarty->assign('content', $content);
// 目前網址
$smarty->assign('action',$_SERVER['PHP_SELF']);

// 呈現在哪個檔案 templates/xxx.tpl
$smarty->display('index.tpl');