PhpWiki is a WikiWikiWeb clone written in PHP. A Wiki is a Web site where anyone can edit or create the pages through the Web browser, with no authentication.
PhpWiki works right out of the box with zero configuration, and comes with a set of default pages.
PhpWiki is useful for collaborating on documentation on a project, having freeform discussions, and easy editing and searching.
A WikiWikiWeb is a web site where anyone can edit the pages through an HTML form. Linking is done automatically on the server side; all pages are stored in a database.
This may sound rather simplistic, but a Wiki is a very unique way to collaborate on the Web.
The addictive quality of a Wiki is that making pages is as simple as making a link to them. If they don't yet exist, the page link will be followed by a hyperlinked question mark; follow that link and you can define the new page.
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