How to install MediaWiki in 11 Steps
MediaWiki is a Wiki software licensed under GPL and written in PHP. Wiki allows users to easily add and edit content in a collaborative way. Wikipedia for example is one of the most popular Wiki's based on MediaWiki.
Below you find the necessary steps for installing MediaWiki.
- Download & install PHP 5.1.2 Installer. The installer creates a folder named 
c\:php - Download PHP 5.1.2 zip package and extract all files in the folder 
c\:php - Edit the 
php.inifile that resides inC:\Windows- Change the extension directory: 
extension_dir = "c:/php/ext/" - uncomment mysql extension: 
extension = php_mysql.dll 
 - Change the extension directory: 
 - Download & install MySQL 4.1.16 (Windows (X86)).
 - Create a virtual directory under IIS called 
phpmyadmin(e.g.c:/inetpub/wwwroot/phpmyadmin)- Add the entry 
index.phpin the documents tab.
 
 - Add the entry 
 - Download the latest phpMyAdmin and extract all files under the virtual directory of 
phpmyadmin. - Edit the file 
config.default.phpthat resides in thephpmyadminfolder.- Change the root password of MySQL.
 
 - Browse to http://localhost/phpmyadmin 
  - Create a virtual directory under IIS called 
mediawiki(e.g.c:/inetpub/wwwroot/mediawiki)- Add the entry 
index.phpin the documents tab. 
 - Add the entry 
 - Download the latest MediaWiki and extract all files under the virtual directory of 
mediawiki - Browse to http://localhost/mediawiki & Configure.
- Add the line: 
$wgEnableUploads = truein theLocalSettings.phpto enable uploads
 
 - Add the line: 
 
Warning
After installation you will notice that some pages give a warning, namely:
Undefined index: REQUEST_URI in C:InetpubwwwrootmediawikiincludesWebRequest 
This is a known issue and can be fixed.