Path of current PHP script relative to document root

Question

TL;DR: What alternatives to the last code sample on this page are there when trying to use relative links on pages included with PHP\'s include com

Answer 1

I have a config/ folder in my project root with a file called main.php, I use this:

$root = $_SERVER['DOCUMENT_ROOT'];
$dir = dirname(__DIR__);
$root = str_replace("\\","/",$root);
$dir = str_replace("\\","/",$dir);
$web_dir = str_replace($root,'',$dir);
if ($web_dir!=='') { $web_dir = '/'.$web_dir; }
define('DIR',$web_dir);

this removes the doc root from the full directory path of my config file, thus giving me the actual path relative to web root. If your config file was in the root of your project you would remove this line:

$dir = dirname(__DIR__);