php PHP在服务器中获取网站根绝对URL？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/10925493/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
PHP get website root absolute URL in server?
提问by lisovaccaro
I rely heavily in $_SERVER["DOCUMENT_ROOT"]to get absolute paths. However this doesn't work for sites which URLs don't point to the root.
我非常依赖于$_SERVER["DOCUMENT_ROOT"]获得绝对路径。但是，这不适用于 URL 不指向根的站点。
I have sites stored in folders such as:
我的网站存储在文件夹中，例如：
- site1
- site2
- 站点 1
- 站点 2
all directly inside the root. Is there a way to get the path in the server where the current site root is?
所有直接在根内。有没有办法在服务器中获取当前站点根所在的路径？
It should return:
它应该返回：
/var/chroot/home/content/02/6945202/html/site1 // If the site is stored in folder 'site1'
/var/chroot/home/content/02/6945202/html // If the site is stored in the root
回答by Ja?ck
You can simply append dirname($_SERVER['SCRIPT_NAME'])to $_SERVER['DOCUMENT_ROOT'].
您可以简单地附加dirname($_SERVER['SCRIPT_NAME'])到$_SERVER['DOCUMENT_ROOT'].
Update
更新
The website seems to be directory "mounted" on that folder, so SCRIPT_NAMEwill obviously be /.
该网站似乎在该文件夹上“挂载”了目录，因此SCRIPT_NAME显然/.
So, to make this work you have to use either __DIR__or dirname(__FILE__)to find out where your script is located in the file system.
因此，要完成这项工作，您必须使用__DIR__或dirname(__FILE__)找出您的脚本在文件系统中的位置。
Update 2
更新 2
There's no single index.phpcontroller for the whole site, so that won't work either.
index.php整个站点没有单一的控制器，所以这也行不通。
The following expression does a string "subtraction" to find the common path. You have a known prefix (document root), an unknown (the root folder) and a known suffix (the script path), so to find the first two, you take the full absolute path (__FILE__) and subtract the known suffix:
以下表达式执行字符串“减法”以查找公共路径。您有一个已知的前缀（文档根目录）、一个未知的（根文件夹）和一个已知的后缀（脚本路径），因此要找到前两个，您需要使用完整的绝对路径 ( __FILE__) 并减去已知的后缀：
substr(__FILE__, 0, -strlen($_SERVER['SCRIPT_NAME']));
If included files need this value, you must store this in a constant first before including the dependent scripts. .
如果包含的文件需要此值，则必须先将其存储在常量中，然后再包含相关脚本。.
回答by Ergec
For future googlers, this also works for me
对于未来的谷歌员工，这也适用于我
substr(substr(__FILE__, strlen(realpath($_SERVER['DOCUMENT_ROOT']))), 0, - strlen(basename(__FILE__)));
回答by Ozzy
Just use getcwd()for the current absolute server path of the folder the current script is in.
仅getcwd()用于当前脚本所在文件夹的当前绝对服务器路径。
You can define a constant at the top of your website so that the rest of the website can rely on that path.
您可以在网站顶部定义一个常量，以便网站的其余部分可以依赖该路径。
define('MY_SERVER_PATH', getcwd());
回答by karthikeyan ganesan
use the following method to get the absolute root url from your server settings
使用以下方法从您的服务器设置中获取绝对根 url
str_replace($_SERVER['DOCUMENT_ROOT']."/",$_SERVER['PHPRC'],$_SERVER['REAL_DOCUMENT_ROOT'])
or use the getcwd(). it gets the current working directory of your application
或使用getcwd()。它获取应用程序的当前工作目录
