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HomeBackend DevelopmentPHP TutorialThinkphp中import的几个用法详细介绍_PHP

ThinkPHP

下面附上import的几个用法介绍

1、用法一

import('@.Test.Translate');
@,表示项目根目录。假定根目录是:App/
导入类库的路径是:App/Lib/Test/Translate.class.php
结论:import('@')是相对于项目目录的Lib目录而言

2、用法二

import('Think.Test.Translate');
Think,表示系统根目录。既是:./ThinkPHP/
导入类库的路径是:./ThinkPHP/Lib/Test/Translate.class.php
结论:import('Think')是相对于系统目录的Lib目录而言

3、用法三

import('ORG.Test.Translate');

import('COM.Test.Translate');
ORG, 第三方公共类库目录
COM, 企业公共类库目录
两种写法都是相对于./ThinkPHP/Extend/Library/ 而言。
导入类库的路径是:./ThinkPHP/Extend/Library/ORG/Test/Translate.class.php

导入类库的路径是:./ThinkPHP/Extend/Library/COM/Test/Translate.class.php

结论:import('ORG')或import('COM')是相对于系统扩展类库目录而言(./ThinkPHP/Extend/Library/)

4、用法四

import('Blog.Test.Translate');
这种写法既不是@,Think的写法,有不是ORG,COM的写法,会被当作分组的项目目录来处理。
解析结果是:App/../Blog/Lib/Test/Translate.class.php
结论:第四种写法,是相对于分组项目目录的Lib目录而言的写法。

5、用法五

import还支持别名导入,使用别名导入,首先先定义别名文件,在项目配置目录下建立alias.php,定义项目中需要用到的类库别名。

return array(
'page' => LIB_PATH.'Common/page.class.php',
);

//这样使用即可
import('page');

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