PHP包含相对路径 [英] PHP include relative path

问题描述

我有/root/update/test.php文件.还有一个文件/root/connect.php;该文件有一行

I have file /root/update/test.php. There's also a file, /root/connect.php; This file has a line

include "../config.php";

在/root/update/test.php中.有代码

In /root/update/test.php. There's the code

set_include_path(".:/root");
include "connect.php";

当我运行/root/update/test.php时，它找到了connect.php，但是找不到config.php，给了我

When I run /root/update/test.php, it finds connect.php, but fails to find config.php, giving me

PHP Warning:  include(../config.php): failed to open stream: No such file or directory in /root/connect.php on line 2
PHP Warning:  include(): Failed opening '../config.php' for inclusion (include_path='.:/root')

这使我感到困惑，因为警告似乎使我似乎正确地完成了所有操作-包含路径为/root，并且它正在寻找存在的文件../config.php(/config.php).有人可以帮我清理一下吗?请注意，由于绝对路径已部署到我无权访问的生产服务器，因此我绝对不可以使用绝对路径.

This is confusing to me because the warnings make it seem like I'm doing everything correctly - the include path is /root, and it's looking for file ../config.php (/config.php), which exists. Can someone clear this up for me? Note that using absolute paths is not an option for me, due to deploying to a production server that I have no access to.

Ubuntu/Apache

Ubuntu/Apache

推荐答案

您始终可以使用__DIR__将其包括在内:

You could always include it using __DIR__:

include(dirname(__DIR__).'/config.php');

__DIR__是"魔术常数"，并返回当前文件的目录，不带斜杠.它实际上是绝对路径，您只需要将文件名连接到__DIR__.在这种情况下，由于需要提升目录，我们使用PHP的dirname提升文件树，然后从这里可以访问config.php.

__DIR__ is a 'magical constant' and returns the directory of the current file without the trailing slash. It's actually an absolute path, you just have to concatenate the file name to __DIR__. In this case, as we need to ascend a directory we use PHP's dirname which ascends the file tree, and from here we can access config.php.

您也可以在此方法中设置根路径:

You could set the root path in this method too:

define('ROOT_PATH', dirname(__DIR__) . '/');

在test.php中

会将您的根目录设置为/root/级别.

in test.php would set your root to be at the /root/ level.

include(ROOT_PATH.'config.php');

然后应从所需位置包含配置文件.

Should then work to include the config file from where you want.

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