common.php

<?php
function dump($arr)
{
    echo "<pre>";
    print_r($arr);
    echo "</pre>";
}

define("PATH", getcwd());
require('smarty/libs/Smarty.class.php');

class CommonController extends Smarty
{
    protected $db;

    function __construct()
    {
        parent::__construct();
        //连接数据库
        $this->connect();

        //设置smarty
        $this->smarty_config();

    }

    private function smarty_config()
    {
        $this->setTemplateDir(P...