PHP中的相对路径无法在服务器上运行 [英] Relative paths in PHP not working on server

问题描述

背景信息：
我一直在我自己的服务器（localhost）上开发一个自托管的Facebook应用程序，并且一切正常。最近，我将我的文件上传到我的共享主机在线服务器（hostgator）并弹出了一个奇怪的错误。

Background info: I've been developing a self hosted Facebook app on my own server (localhost) and have everything all working. Recently, I uploaded my files to my shared hosting online server (hostgator) and an odd bug popped up.

我的require_once（）函数似乎忽略了hostgator上的相对路径服务器。例如，在index.php中，我有require_once（'fb / login.php'）。这会引发错误，指出无法找到example.com/login.php中的文件。为什么require（）会忽略我路径的fb部分？请记住，这在我的私有localhost服务器上完全正常。
我做了一些谷歌搜索并通过进入php.ini并打开include_path =：解决了一半的问题。这摆脱了第一个错误，但现在login.php也有require_once（'fb / sdk / Facebook.php'），无法找到该文件。我知道嵌套需求会变得混乱，但这确实可以在我的localhost服务器上运行。
两台服务器都是PHP5，我确保php.ini文件类似。默认情况下，localhost php.ini已注释include_path。我甚至用我的localhost替换了在线php.ini文件。依然没有。
我尝试过使用绝对路径，它们确实可以工作，但是我的代码中有很多包含和要求，并且不希望每个路径都有代码。任何见解？这是一个非常令人生气的问题，我希望有一个简单的解决方案。

My require_once() functions seem to ignore relative paths on the hostgator server. For example, in index.php, I have require_once('fb/login.php'). This throws an error, stating that the file at example.com/login.php cannot be found. Why does require() ignore the fb part of my path? Remember, this works perfectly fine on my private localhost server. I did some Googling and solved half the problem by going into php.ini and turning on include_path=".:". This got rid of the first error, but now login.php also has require_once('fb/sdk/Facebook.php') and cannot locate that file. I understand that it gets messy with nested requires, but this does work on my localhost server. Both servers are PHP5, and I have made sure that the php.ini files are similar. By default, the localhost php.ini has include_path commented. I have even gone as far to replace the online php.ini file with my localhost one. Still, nothing. I have tried using absolute paths, and they do work, but I have many includes and requires throughout my code and do not want to hand code every single path. Any insight? This is a really infuriating problem and I hope there is an easy solution.

谢谢！

我做了大量研究，最后使用$ _SERVER ['DOCUMENT_ROOT']。'fb / login。 php'作为我所有需求和包含的路径。解决了我所有的问题，感谢上帝

Well I did a ton of research and ended up using $_SERVER['DOCUMENT_ROOT'].'fb/login.php' as my path for all of my requires and includes. Fixed all of my problems, thank god

推荐答案

我很久以前就停止使用相对路径来避免你遇到的麻烦现在经历。考虑像所有PHP框架一样 - 它们定义一个变量来指示服务器根目录的确切位置，然后您可以使用它来构建文件的绝对路径。

I stopped using relative paths a long time ago to avoid the kind of troubles you are going through now. Consider doing like all PHP frameworks do - they define a variable that indicates where exactly is the root of the server, then you can use that to build absolute paths to your files.

您可以通过将此添加到root index.php文件来实现：

You can do that by adding this to you root index.php file:

define('DOCROOT', realpath(dirname(__FILE__)).'/');

然后只需要查看所有 require 语句并首先添加DOCROOT：

Then it's just a matter of going through all your require statements and adding DOCROOT first:

require_once('fb/login.php');

变为：

require_once(DOCROOT . 'fb/login.php');

您甚至可以通过替换 require_once（'<进行全局搜索和替换/ code> with require_once（DOCROOT。'

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