PHP Include()问题 [英] Php Include() Issues

问题描述

我有三个文件，如下所示

1. users.php
2. auth.php
3. main.php

其中users.php位于目录/的根目录. auth和main.php位于测试文件夹示例/test/auth.php&中. /test/main.php.

Users.php包含以下php代码.

<?php 
include('test/main.php');
?>

auth.php包含以下php代码.

<?php 
include('../test/main.php');
?>

main.php代码

<?php
include('test/db.php');
?>

在我执行users.php的地方，它运行正常，但是当我执行位于根文件夹中的users.php时，输出却很完美，但是如果我正在执行/test/auth.php

Warning: include(test/db.php) [function.include]: failed to open stream: No such file or directory in /path/db.php on line 2

有没有解决方法以正确的功能访问auth.php错误.

解决方案

包含项始终相对于工作目录(实际上，相对于 PATH 而言，工作目录是一部分).工作目录由正在执行的脚本确定.假设您具有以下结构:

webroot/
    foo.php
    folder/
        bar.php

通过命令行上的$ php foo.php或通过在浏览器中访问localhost/foo.php运行foo.php时，工作目录为webroot/.如果运行folder/bar.php，则工作目录为webroot/folder.

要确保您包含的文件相对于文件 include所在的位置，请使用以下命令:

include __DIR__ . '/folder/bar.php`;

那个，或者更改您的PATH 以添加您的项目根目录，并且始终包含相对于项目根目录的目录.我更喜欢上面显示的相对文件，或者自动加载.

I am having three files which are as follows

1. users.php
2. auth.php
3. main.php

where users.php is located at root of the directory / . auth and main.php is located into the test folder example /test/auth.php & /test/main.php.

Users.php containing following php code.

<?php 
include('test/main.php');
?>

auth.php containing following php code.

<?php 
include('../test/main.php');
?>

main.php code

<?php
include('test/db.php');
?>

Where i am executing users.php it is working perfectly but when i am executing users.php which is located at root folder gives me output perfect but if i am executing /test/auth.php

Warning: include(test/db.php) [function.include]: failed to open stream: No such file or directory in /path/db.php on line 2

is there any solution to access auth.php with error with proper function.

解决方案

Includes are always relative to the working directory (actually, relative to the PATH, of which the working directory is a part). The working directory is determined by the script that's being executed. Say you have this structure:

webroot/
    foo.php
    folder/
        bar.php

When you run foo.php either through $ php foo.php on the command line or by visiting localhost/foo.php in your browser, the working directory is webroot/. If you run folder/bar.php, the working directory is webroot/folder.

To make sure you're including files relative to the file the include is in, use something like:

include __DIR__ . '/folder/bar.php`;

That, or alter your PATH to add your project root to it and always include relative to the project root. I prefer either file relative includes as shown above or autoloading though.

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