CI框架配置smarty

新建一个libraries 代码如下：

使用

$this->ci_smarty->set('pv',$pv);
$this->ci_smarty->set('pv_se',$pv_se);
$this->ci_smarty->build('home.html');

<?php
// load Smarty library
require_once(APPPATH.'libraries/smarty/Smarty.class.php');

class CI_smarty extends Smarty {
	private $viewData = array();

	function __construct() {
		parent :: __construct();
		$this -> template_dir = APPPATH . 'views/';
		$this -> compile_dir = APPPATH . 'cache/compile/';
		$this -> config_dir = APPPATH . 'config';
		$this -> cache_dir = APPPATH . 'cache/';
		$this -> left_delimiter = '<%';
		$this -> right_delimiter = '%>'; 
		$this->caching = true;
		//$this->testInstall();
		@$this -> clear_all_cache(); 
		//  $this->config_load('site.conf');
		parse_str($_SERVER['QUERY_STRING'],$_GET);
		$_GET = array_map('urldecode', $_GET);
		if (isset($_GET["_d"]) && $_GET["_d"] == 1) {
			$this -> debugging = true;
		}
	}

	function set($key, $val) {
		$arr = array();
		$arr[$key] = $val;
		if ($this->viewData) {
			$this->viewData = array_merge($this->viewData,$arr);
		} else {
			$this->viewData = $arr;
		}
		//$this->assign('v', $this->viewData);
	}

	function build($template)
	{
		$this->assign('v', $this->viewData);
		$this->display($template);
	}
}
?>