Extension talk:AddHTML

DEPRECATED EXTENSION
This extension does work, but for some reason, if you use it multiple times on a page, it stops working? Bit odd that one. -161.12.7.4 12:21, 16 June 2008 (UTC)
 * Hi - I do not support this extension anymore (deprecated). It was part of my first wave of extensions I did for MW. Please see Extension:SecureHTML. Jean-Lou Dupont 12:31, 16 June 2008 (UTC)

Changes needed for MediaWiki 1.22 and newer
I've installed mediawiki v1.22.0 and upgraded my old wiki mw-config and update.php. However when I load the wiki, I see this message:

Warning: Parameter 3 to addHTMLclass::hAddHtmlTag expected to be a reference, value given in /var/www/html/wiki/includes/parser/Parser.php on line 4020

Warning: Parameter 3 to addHTMLclass::hAddHtmlTag expected to be a reference, value given in /var/www/html/wiki/includes/parser/Parser.php on line

I replaced addHTML with SecureHTML and that got rid of the addHTML errors.

How to run php through this extension
Could you please describe this stuff in detail? And give some examples.Thanks