PHP从webroot外部的文件中包含webroot中的文件

I have a php file outside my webroot in which I want to include a file that is inside the webroot.

folder outside webroot
- > php file in which I want to include
webroot
- > file to include

So I have to go one directory up, but this doesnt work:

include('../webroot/file-to-include.php');

Include full path doesn't work either:

include('home/xx/xx/domains/mydomain/webroot/file-to-include.php');

How can I accomplish this?

解决方案

Full path should be:

include('/home/xx/xx/domains/mydomain/webroot/file-to-include.php');

Or you should set the path like:

include(__DIR__ . '/../webroot/file-to-include.php');  // php version >= 5.3
include(dirname(__FILE__) . '/../webroot/file-to-include.php');  // php version < 5.3