为什么./在我的php文件中不被识别为当前目录? [英] Why ./ is not being recognized as current directory in my php file?

问题描述

我具有以下文件层次结构:

I have the following file hierarchy:

并且require_once某种程度上不起作用(警告:require_once(./AutentificadorJWT.php):无法打开流:第2行的C:\ xampp \ htdocs \ clases \ usuario.php中没有此类文件或目录) 据我所知./指向当前目录.现在，以下作品: require_once'AutentificadorJWT.php'; 为什么./不起作用?

and the require_once is somehow not working (Warning: require_once(./AutentificadorJWT.php): failed to open stream: No such file or directory in C:\xampp\htdocs\clases\usuario.php on line 2) As far as I know ./ points to the current directory. Now the following works: require_once 'AutentificadorJWT.php'; Why ./ is not working?

推荐答案

当您具有复杂的代码层次结构时，很难知道当前目录是哪个目录.如果要有恒定的参考点，则可以使用$_SERVER['DOCUMENT_ROOT']定义计算机上代码的基础.所以...

It can be quite difficult to know what directory is the current directory when you have a complex hierarchy of code. If you want to have a constant point of reference, then you can use $_SERVER['DOCUMENT_ROOT'] which defines the base of your code on your computer. So...

require_once $_SERVER['DOCUMENT_ROOT'].'/base.php';

将在项目的根目录下为base.php工作.我遇到的一个问题是，单元测试并不总是设置很多$_SERVER变量.

Will work for base.php in the root of your project. The one problem I've had with this is that unit testing doesn't always have a lot of the $_SERVER variables set.

或者，您可以使用__DIR__，它是当前文件的目录.因此，如果您将其更改为...

Alternatively, you can use __DIR__ which is the directory of the current file. So if in your case you changed it to ...

require_once __DIR__.'/AuthentifacdorJWT.php';

这将始终与您使用的文件的目录有关.

This will always be relative to the directory of the file your working with.

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