php require_once 中的相对路径不起作用
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relative path in require_once doesn't work
提问by user525146
I have the following structure
我有以下结构
otsg
> class
> authentication.php
> database.php
> user.php
> include
> config.inc.php
> encryption.php
> include.php
> session.php
> index.php
> registration.php
include.php file has the following
include.php 文件有以下内容
ini_set('display_errors', 1);
error_reporting(E_ALL);
ini_set('include_path',ini_get('include_path').':/Applications/MAMP/htdocs/otsg/:');
require_once 'config.inc.php';
require_once '../class/database.php';
require_once '../class/user.php';
require_once 'encryption.php';
require_once 'session.php';
require_once '../class/authentication.php';
and in the index.php page I had included
并在我包含的 index.php 页面中
require_once 'include/include.php';
When I open the page index.php I get the following warning and fatal error. I don't understand what causes this error. When I gave the absolute path it works. But absolute path is not a good idea i believe.
当我打开页面 index.php 时，我收到以下警告和致命错误。我不明白是什么导致了这个错误。当我给出绝对路径时，它就起作用了。但我相信绝对路径不是一个好主意。
Warning: require_once(../class/database.php) [function.require-once]: failed to open stream: No such file or directory in /Applications/MAMP/htdocs/otsg/include/include.php on line 9
Fatal error: require_once() [function.require]: Failed opening required '../class/database.php' (include_path='.:/Applications/MAMP/bin/php5.3/lib/php:/Applications/MAMP/htdocs/otsg/include/:') in /Applications/MAMP/htdocs/otsg/include/include.php on line 9
Thanks in advance
提前致谢
回答by Raisen
Use
用
__DIR__
to get the current path of the script and this should fix your problem.
获取脚本的当前路径，这应该可以解决您的问题。
So:
所以：
require_once(__DIR__.'/../class/user.php');
This will prevent cases where you can run a PHP script from a different folder and therefore the relatives paths will not work.
这将防止您可以从不同的文件夹运行 PHP 脚本的情况，因此相关路径将不起作用。
Edit: slash problem fixed
编辑：斜线问题已修复
回答by Mobile Tech.
for php version 5.2.17 __DIR__will not work it will only works with php 5.3
对于 php 版本 5.2.17__DIR__将不起作用，它仅适用于 php 5.3
But for older version of php dirname(__FILE__)perfectly
但是对于旧版本的php dirname(__FILE__)完美
For example write like this
例如这样写
require_once dirname(__FILE__) . '/db_config.php';
回答by linuxatico
In my case it doesn't work, even with __DIR__or getcwd()it keeps picking the wrong path, I solved by defining a costant in every file I need with the absolute base path of the project:
在我的情况下，它不起作用，即使有__DIR__或getcwd()它一直选择错误的路径，我通过在我需要的每个文件中使用项目的绝对基本路径定义一个 costant 来解决：
if(!defined('THISBASEPATH')){ define('THISBASEPATH', '/mypath/'); }
require_once THISBASEPATH.'cache/crud.php';
/*every other require_once you need*/
I have MAMP with php 5.4.10 and my folder hierarchy is basilar:
我有 php 5.4.10 的 MAMP，我的文件夹层次结构是基本的：
q.php
w.php
e.php
r.php
cache/a.php
cache/b.php
setting/a.php
setting/b.php
....
....
回答by hamish
I just came across this same problem, where it was all working fine, up until the point I had an includes within another includes.
我刚刚遇到了同样的问题，在那里一切正常，直到我在另一个包含中包含一个包含。
require_once '../script/pdocrud.php'; //This worked fine up until I had an includes within another includes, then I got this error:
Fatal error: require_once() [function.require]: Failed opening required '../script/pdocrud.php' (include_path='.:/opt/php52/lib/php')
Solution 1.(undesired hardcoding of my public html folder name, but it works):
解决方案 1.（对我的公共 html 文件夹名称进行了不需要的硬编码，但它有效）：
require_once $_SERVER["DOCUMENT_ROOT"] . '/orders.simplystyles.com/script/pdocrud.php';
Solution 2.(undesired comment above about DIR only working since php 5.3, but it works):
解决方案 2.（上面关于 DIR 仅在 php 5.3 后才有效，但它有效）的不受欢迎的评论：
require_once __DIR__. '/../script/pdocrud.php';
Solution 3.(I can't see any downsides, and it works perfectly in my php 5.3):
解决方案 3.（我看不出任何缺点，它在我的 php 5.3 中完美运行）：
require_once dirname(__FILE__). '/../script/pdocrud.php';
