ZendFramework中使用Cache緩存機制

如下圖所示建立工程：

代碼如下：

1.<?php
2.
3./**
4. * IndexController - The default controller class
5. *
6. * @author
7. * @version
8. */
9.
10.require_once 'Zend/Controller/Action.php';
11.require_once 'Zend/Cache.php';
12.require_once 'Zend/Registry.php';
13.require_once 'Zend/Db.php';
14.require_once 'Zend/Db/Table.php';;
15.
16.class IndexController extends Zend_Controller_Action
17.{
18.    public function init()
19.    {
20.        $params = array ('host' => 'localhost',
21.                         'username' => 'root',
22.                         'password' => 'root',
23.                         'dbname'   => 'mysql');
24.        $db = Zend_Db::factory('Pdo_Mysql', $params);
25.        Zend_Db_Table::setDefaultAdapter($db);
26.        Zend_Registry::set('db', $db);
27.    }
28.
29.    public function indexAction()
30.    {
31.        $frontendOptions = array(
32.            'lifeTime' => 7200, // 兩小時的緩存生命期
33.            'automatic_serialization' => true
34.        );
35.
36.        $backendOptions = array(
37.            'cache_dir' => 'C:/tmp/' // 放緩存文件的目錄
38.        );
39.
40.        // 取得一個Zend_Cache_Core 對象
41.        $cache = Zend_Cache::factory('Core',
42.                                     'File',
43.                                     $frontendOptions,
44.                                     $backendOptions);
45.        if(!$result = $cache->load('myresult')) {
46.            // 緩存不命中;連接到數據庫
47.            $dbAdapter = Zend_Registry::get('db');
48.            $result = $dbAdapter->query('SELECT * FROM user')->fetchAll();
49.            $cache->save($result, 'myresult');
50.            echo "This one is from database!<br/>";
51.        } else {
52.            // cache hit! shout so that we know
53.            echo "This one is from cache!<br/>";
54.        }
55.        print_r($result);
56.    }
57.}