Make a single page a wiki-style editable using PHP

Question

Are there any lightweight PHP solutions out there for making a single page editable by anyone who views it?

Update: and I don't mean like TiddlyWiki.

Answer 1

I don't know any 'single page' wikis, but check Lionwiki:

LionWiki is a minimalist Wiki engine programmed in PHP. It is extensible, templatable, file based (it doesn't need database like MySQL) and requires just one file to function.

Answer 2

I think this can interest You: http://en.wikipedia.org/wiki/TigerWiki, but I haven't tried it myself.