Manual:Short URL/Sturmkrieg
This method of creating short URLs is very simple and uses minimal code. It is also very easy to implement. This has been developed for Apache webservers.
Source edit
LocalSettings.php edit
# Short URLs
$wgScriptPath = "";
$wgScript = "$wgScriptPath/index.php";
$wgRedirectScript = "$wgScriptPath/redirect.php";
$wgArticlePath = "$wgScriptPath/$1";
$wgUsePathInfo = true;
.htaccess edit
# © Copyright 2012 Mark A. Hershberger
# http://www.mediawiki.org/wiki/User:MarkAHershberger
# CC BY-SA
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ /index.php?title=$1 [L,QSA]