On his blog today, Vinu Thomas has an example of what he calls a "quicker and cleaner form" using the Zend_Form component of the Zend Framework.

Usually handing forms involves coding the form in HTML and performing client and server side validation, which usually makes the code for complex forms quite unwieldy. Zend_Form which is available in Zend Framework version 1.5 aims at simplifying this process.

With this new version comes the ability to add in methods for validation right into the form definition. His example shows a traditional login form that checks things like if it's required, checking the length and adding filters to modify the input.