Steps for setting up GeSHi (Generic Syntax Highlighter) on MediaWiki:

1. Download GeSHi (Generic Syntax Highlighter).
2. Upload geshi.php and the geshi folder to your MediaWiki extensions folder.
3. Create GeSHiHighlight.php using this source code.
4. Copy the following line to your LocalSettings.php file.

   include("extensions/GeSHiHighlight.php");

5. Add code to a MediaWiki page using <pre> tags.

   <php><?php echo "Hello World!"; ?></php>
   

More information about GeSHI can be found at http://qbnz.com/highlighter/.

Edit: Oops. I had posted the last step with <pre> tags instead of <php>. I’ve fixed it now. Thanks override!

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