Do you think it is preferred to use $_SERVER['DOCUMENT_ROOT']
in website's include
statements? Is it supported everywhere without any problem?
Many frameworks use dirname(__FILE__)
to work out the application path based on a known file, usually the index.php
In the Zend Framework, they use the following to define the application path, which is then used everywhere in the app:
define('APPLICATION_PATH', realpath(dirname(__FILE__) . '/../application');
I personally prefer relative paths: include("../../some/other/path.php")
Whenever I create a directory, I know exactly how my directory tree is setup, and it doesn't matter whether there is a document root or anything else available.
Furthermore, there are some cases where $_SERVER['DOCUMENT_ROOT']
may not work (eg, I have seen people have issues with it on IIS).
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