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进阶安装
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进阶安装

这是基础安装的进阶，请先阅读基础安装文章。

稍微更灵活的方式是使用扩展类来安装Smarty和初始化。代替反复地定义路径，赋同样的值等等，我们可以把这些操作放在一个地方进行。

我们新建一个目录/php/includes/guestbook/，并新建一个 setup.php文件。在下面的例子中，我们假设/php/includes 目录已经在include_path中。确定你已经进行这个配置，或者使用绝对路径。

Example 2.10. /php/includes/guestbook/setup.php


<?php

// load Smarty library
require('Smarty.class.php');

// The setup.php file is a good place to load
// required application library files, and you
// can do that right here. An example:
// require('guestbook/guestbook.lib.php');

class Smarty_GuestBook extends Smarty {

   function __construct()
   {

        // Class Constructor.
        // These automatically get set with each new instance.

        parent::__construct();

        $this->setTemplateDir('/web/www.example.com/guestbook/templates/');
        $this->setCompileDir('/web/www.example.com/guestbook/templates_c/');
        $this->setConfigDir('/web/www.example.com/guestbook/configs/');
        $this->setCacheDir('/web/www.example.com/guestbook/cache/');

        $this->caching = Smarty::CACHING_LIFETIME_CURRENT;
        $this->assign('app_name', 'Guest Book');
   }

}
?>

在index.php文件中使用setup.php:

Example 2.11. /web/www.example.com/guestbook/htdocs/index.php


<?php

require('guestbook/setup.php');

$smarty = new Smarty_GuestBook();

$smarty->assign('name','Ned');

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

现在你可以看到这是非常简单就可以实例化一个Smarty的对象，仅调用Smarty_GuestBook()就可以自动初始化程序。

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