Object oriented design for the backend

Hey, in order to make the backend of the website (aka pear-database.php) more maintainable, I've been thinking a bit about a fresh, object oriented design lately. Today I started outlining my ideas in UML; a first result can be found at http://divbyzero.net/junk/pearweb-uml.gif (I didn't ues any of the "hardcore" UML stylistic devices, so even people without profound knowledge of UML should be able to at least figure out the basics.) Basically the diagram presents the current status-quo from pear-database.php, but I believe it's a bit more organized and it adds a bit more structure especially concerning the user model. I'd like to use this draft as the basis for our further analysis and design process; feedback is appreciated. Because it is unlikely that we will be able to implement the new backend in the next weeks/months, it also seems to make sense to use PHP 5 (and probably MySQL 4.1) for the concrete realization. I'm also wondering if we should use DB_DataObjects for talking to the database. -- - Martin Martin Jansen http://martinjansen.com/