php 堂兄弟路径引用的话,怎么写简单点?

比如

C:\AppServ\www\YB-PHP\PathDemo\China\ShanDong\LinYi\03.php

要导入

C:\AppServ\www\YB-PHP\PathDemo\China\JiangSu\NanJing\NanJingEcho.php

就得写:

include('../../JiangSu/NanJing/NanJingEcho.php');

这样啰嗦不说,还老是容易弄错几个"../",每次我数这个,我都弄得好糊涂,怎么写简单点?

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$_SERVER['DOCUMENT_ROOT'].'/JiangSu/NanJing/NanJingEcho.php'

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psr4自动加载器

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define('BASEPATH', 'C:\AppServ\www\YB-PHP\PathDemo\China\');
include(BASEPATH . 'JiangSu/NanJing/NanJingEcho.php');