包括、要求和相对路径 [英] include, require and relative paths

问题描述

我不知道为什么我总是遇到很多问题.无论如何，这是我想要的文件的路径

I'm not sure why I always have some many problems with this. Anyways this is the path to the file I want to require

/var/www/vhosts/mysite.com/htdocs/Classes/DBConnection.php

这是包含 require 语句的文件的路径

This is the path to the file that has the require statement

/var/www/vhosts/mysite.com/htdocs/Classes/Forecast/MyFile.php

这是 MyFile.php 中的 require 语句

and this is the require statement in MyFile.php

require_once '../DBConnection.php';

我不断收到无法打开流"错误.如果我放入绝对路径，它工作正常.有没有人看到这里的问题?

I keep getting the "failed to open stream" error. It works fine if I put in an absolute path. Does anyone see the problem here?

推荐答案

如果 /Classes/Forecast/MyFile.php 包含在 /index.php 中的相对路径将来自索引文件.要解决此问题，请使用 __DIR__.然后 require 将与该文件相关.

If /Classes/Forecast/MyFile.php is included from /index.php the relative path will be from the index file. To solve this, use __DIR__. The require will then be relative from that file.

require_once __DIR__.'/../DBConnection.php';

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