Translations:MediaWiki history/19/en

The "PHP script" was made available in August 2001, shared on SourceForge in September, and tested until late 2001. As Wikipedia suffered from recurring performance issues because of increasing traffic, the English language Wikipedia eventually switched from UseModWiki to the PHP script in January 2002. Other language versions also created in 2001 were slowly upgraded as well, although some of them would stay powered by UseModWiki until 2004. An automated program, called "User:Conversion script", converted the last version of the existing articles to the phase II format; Brion Vibber partly restored previous revisions of the UseModWiki history on the English Wikipedia in September 2002.