如何在PHP上获取root目录

Question

I use realpath('../'), it work fine but the result is D:wampwww ( real path is D://wamp/www ). Anybody can tell me how to get realpath by the right way? Thanks you verry much.

Answer 1

使用：

$_SERVER['DOCUMENT_ROOT'];

Answer 2

You can put some php file into the root and get:

$rootPath = dirname(__FILE__)

inside it.

Answer 3

To get root directory path of a PHP project:

For PHP >= 5.3.0

use: __DIR__

Note: The directory of the file. If used inside an include, the directory of the included file is returned. This is equivalent to dirname(__FILE__) . This directory name does not have a trailing slash unless it is the root directory.

For PHP < 5.3.0

use: dirname(__FILE__) or realpath(dirname(__FILE__))

Or in most common for getting server document root directory where projects resides :

$_SERVER['DOCUMENT_ROOT'] or filter_input(INPUT_SERVER, 'DOCUMENT_ROOT')

See : "magical" PHP constants

Answer 4

如果使用php 5.3或更高版本然后使用

filter_input(INPUT_SERVER, 'DOCUMENT_ROOT');