A virtual filesystem for PHP, intended for developers.
php-VFS is a PHP library that creates virtual filesystem as well as a stream wrapper for this filesystem. It can use several different databases as backends that are avaliable to PHP, including but not limited to mySQL and sqlite. The stream wrapper will provide simple ease of use to the virtual filesystem, allowing the programmer to work with it using PHP's internal filesystem operations. It also includes several preprogrammed functions to assist users, such as 'formatting' (creating) a virtual filesystem, or importing/exporting directory structure to/from a real filesystem. The library is intended to be as simple to use as possible, by simply including the library in your script and accessing the virtual filesystem through a couple global variables and a simple URL protocol.
The code is still in pre-alpha stage, more information can be found on our project page.
Update 2006-05-11: Now that SF has SVN access, we will be using SourceForge for the work.