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YII如何调用第三方PHP类
首先要了解Root Alias
为方便起见,Yii 预定义了以下几个根别名:
    system: 表示 Yii 框架目录;
    zii: 表示 Zii 库 目录;
    application: 表示应用的 基础目录;
    webroot: 表示 入口脚本 文件所在的目录。此别名从版本 1.0.3 开始有效。
    ext: 表示包含了所有第三方 扩展 的目录。此别名从版本 1.0.8 开始有效。

* 导入Class
使用别名可以很方便的导入类的定义。例如,如果我们想包含 CController 类的定义,我们可以调用如下代码

Yii::import('system.web.CController');

import 方法跟 include 和 require 不同,它更加高效。导入(import)的类定义并不会真正被包含进来,直到它第一次被引用。多次导入同样的名字空间也会比 include_once 和 require_once 快得多。

提示: 当引用 Yii 框架定义的类时,我们不需要导入或包含它。所有的核心 Yii 类都已被提前导入了。


* 引用第三库
第一,比如说,我们要使用 Zend framework的东西。我们把zend framework解压到 prtected/vendors里面,现在的文件夹为 protected/vendors/Zend/Search/Lucene.php

第二,在controller文件的头部,插入下面代码。
Yii::import('application.vendors.*'); // 可以配置在config/main.php中
require once('Zend/Search/Lucene.php');
上面代码包含了Lucene.php这个类文件。因为我们用到的是相对路径,所以我们需要改变PHP加载文件的路径,Yii::import 一定要在require_once 之前。

1 楼 prinsipe 2012-06-04  
 YII怎么调用第三方PHP类 good
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