DevShed: Getting Started with PHP Fusebox. The Fusebox web methodology may change the way you approach architecting data-driven web applications. The latest version of Fusebox is the most scalable and effective incarnation of a “web box” – style architecting approach. Created by Steve Nelson, Fusebox has been further popularized by the arrival of a PHP port by David Huyck of http://bombusbee.com. Armed with Fusebox and a few simple tools, PHP developers can now architect scalable web applications across project teams, technical disciplines, and display mediums. — Mike Britton
Don't believe the statement you will find in the article that says 70% of all software projects fail, otherwise most IT companies would be out of business. In most such studies – failure is defined to include cost and time overruns. This is inevitable when the customer changes the scope of the project.
After some investigation, I found this Newbie Guide to Fusebox for PHP (PDF), which is much clearer than the above Devshed article. [PHP Everywhere]