At JPL we've developed a number of PHP web applications for different projects and missions that each expose aspects of the underlying OODT infrastructure via browser-based interfaces. Over time, a set of classes and interfaces emerged as generally useful for building these types of applications. More recently, this set was codified under the name "OODT Balance" and was offered to projects as a self-contained PEAR package. The package serves as the basis for developing and combining modular, reusable components and allows PHP developers to integrate OODT services into their websites.
Since the package has been generically developed, and is already in use by a broad variety of projects at JPL, from cancer research to regional climate modeling, I'd like to make it available to the larger community. I'll attach a patch here shortly which provides the OODT Balance library as a PEAR package.