PHP Includes requiring $_SERVER['DOCUMENT_ROOT'] how to disable to only use file location?

Question

Is there a way to disable/negate the use of $_SERVER['DOCUMENT_ROOT'] when including my php files? I would prefer

require '/somedirectory/somefile.php'; 

instead of

$_SERVER['DOCUMENT_ROOT'].'/somedirectory/somefile.php';

Running Centos and cPanel.

Or is this something that will always be required when writing my php code?

Answer 1

require './somedirectory/file.php 

works from the base of the application without explicitly referring to the $_SERVER ... There is no disabling but there is defining that variable or different variables to aid in your routing. variables like base_url and site_url

The dot refers to the root of the application.

Answer 2

只需使用：

require './somedirectory/somefile.php'; 

Answer 3

It's not required that you use those. You don't have to use full paths. Apache and PHP will generally look in the same path as the calling file (omit the / or PHP will think you mean the root of the server drive)

require 'somedirectory/somefile.php'; 

Another option is to set the include_path so PHP knows where to look implicitly

set_include_path('/full/path/to/files');