PHP 定义值在包含文件中丢失 [英] The PHP define value is lost in include files

问题描述

我有一个包含这一行的 config.php 文件:

I have a config.php file with this line in it:

define("home_dir",'soft06/site_name');

在 index.php 文件中我有:

In index.php file I have:

include_once ("config.php")
... some html code ....
include_once (home_dir."/footer.php")

效果很好.但是，如果在 footer.php 中我放了这一行:

That works well. However if in footer.php I put this line:

echo("home_dir=".home_dir);

我明白了:

Notice:  Use of undefined constant home_dir - assumed 'home_dir' in <b>D:\xampp\htdocs\footer.php on line 3
home_dir=home_dir

但是如果我选择像这样包含 footer.php:include_once ("footer.php") 而不是 include_once (home_dir."/footer.php")它工作正常.

But if I choose to include footer.php like this: include_once ("footer.php") instead of include_once (home_dir."/footer.php") It works fine.

在我看来，如果我在 include_once 函数中使用常量 home_dir，我将丢失包含文件中的 home_dir 值.

It seems to me that if I use the constant home_dir in include_once function I will lose the home_dir value within the include file.

任何帮助将不胜感激.

推荐答案

所以你

include_once (home_dir."/footer.php")

试图通过 http 包含文件 :^ ) 并且它已在包含之前执行.所以在另一个 http 请求中运行的 footer.php 和 home_dir 没有定义.

trying to include file over http :^ ) And it have been executed before inclusion. So footer.php running in another http request and there for home_dir was not defined.

必须使用本地路径进行包含.

You must use local path for including.

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