PHP - 带有相对路径的include（）或require（）在Windows上不起作用，即使在追加__DIR__时也是如此

Question

I was reading here about problems in PHP when using include() or required() with relative paths and all the solutions I saw was to append DIR

I'm currently working on Windows, and even though the error message displays the current value of DIR , then the relative path seems to be added as a string, rather than going one level up, for example:

include(__DIR__ . "..\\another_folder\\file_2.php");

produces the following error: Warning: include(C:\\xampp\\htdocs\\main_folder..\\another_folder\\file_2.php) [function.include]: failed to open stream: No such file or directory in

Any idea what's going on?

Answer 1

You need to add the \\ after the directory name:

include(__DIR__ . "\\..\\another_folder\\file_2.php");

This will make the path be

C:\\xampp\\htdocs\\main_folder\\..\\another_folder\\file_2.php

instead of

C:\\xampp\\htdocs\\main_folder..\\another_folder\\file_2.php

Also, for portability, it is advisable to use / instead of \\ , which works on all platforms, including Windows:

include(__DIR__ . "/../another_folder/file_2.php");

Answer 2

Don't use backslashes in paths in PHP, use regular forward slashes ( / ) everywhere. PHP will translate to the appropriate OS-specific directory separators for you automatically.

That being said, look at the error message in detail:

 ... lude(C:\xampp\htdocs\main_folder..\another_folder\file_2.php) [func...
                                     ^--- missing a slash here