You can add your extention in your MediaWiki installation using following steps:
include("extensions/NewExtensionName.php");
Note: Replace NewExtensionName.php with your new extention file name.
You may refer Readme file if it requires any special steps to take care before the installation.
1. Download and install ExtensionFunctions.php
ExtensionFunctions.php is a helper file. Some newer extentions require this file. This file allows extensions to be modularized away from the MediaWiki core code. You can download this file from http://www.mediawiki.org/wiki/Download_from_SVN and once you download, copy the ExtensionFunctions.php file to $IP/extensions/ sub-directory of your MediaWiki installation.2. Download your extension
A list of extensions documented on MediaWiki.org is available on the http://www.mediawiki.org/wiki/Extension. Matrix and a list of extensions stored in the Wikimedia is available on http://svn.wikimedia.org/viewvc/mediawiki/trunk/extensions/.3. Install your extension
You can install extention by simply adding a line in the LocalSettings.php file in the following manner:include("extensions/NewExtensionName.php");
Note: Replace NewExtensionName.php with your new extention file name.
You may refer Readme file if it requires any special steps to take care before the installation.
