So if I'm disinclined to comb through the code for Phosphoros's sake, then why was I digging through Phosphoros? Because it was my first shot at an actually useful CRUD application, and I needed to review how I accomplished a certain database-querying task in PHP, for use in a client's intranet application. Specifically, the one where I'm porting a 14-year-old MS Access application to an XAMP platform. In retrospect, while this would have been possible without JQuery, it would have ended up a lot more clunky. A lot of skills came together and blossomed at the right time to make this not merely possible, but manageable.
Back to Phosphoros for a moment though... it's still rather a mess of commingled HTML, PHP and MySQL, and I wouldn't release it on SourceForge or whatever with another round of serious refactoring effort.