7-5 index.php

<?php
// 引入頁首
require_once 'header.php';
// include_once 'header.php';

/*****************主內容區***********************/
// $smarty->assign('now' 相當於php $now
$smarty->assign('now', date("Y-m-d"));

function list_all()
{
    global $smarty;
    // 初始化
    $content                = [];
    $content[1]['done']     = "完成";
    $content[1]['title']    = "撰寫程式";
    $content[1]['end']      = "2020/06/08";
    $content[1]['priority'] = "低";
    $content[1]['assign']   = "李大頭";
    $content[2]['done']     = "未完成";
    $content[2]['title']    = "開會";
    $content[2]['end']      = "2020/06/08";
    $content[2]['priority'] = "高";
    $content[2]['assign']   = "李大頭、主任、XX科";
    $content[3]['done']     = "完成";
    $content[3]['title']    = "撰寫程式";
    $content[3]['end']      = "2020/06/08";
    $content[3]['priority'] = "低";
    $content[3]['assign']   = "李大頭";

    // var_dump($content);
    $smarty->assign('content', $content);

}

/*****************流程判斷***********************/
$op = isset($_REQUEST['op']) ? filter_var($_REQUEST['op'], FILTER_SANITIZE_SPECIAL_CHARS) : "";

switch ($op) {
    case 'post_form':
        echo $op;
        break;

    default:
        list_all();
        break;
}

/*****************頁尾***********************/

// 呈現在哪個檔案 templates/xxx.tpl
$tpl = 'index.tpl';
// 引入頁尾
require_once 'footer.php';