In this recent post to his site, Matt Cockayne shows you how to bootstrap your forms in a Zend Framework 2 application (as defined in a class).

A brand spanking new Forms component has been rolled out with ZF2. The long and the short of this new component meant that I had the opportunity to hand roll a new way of making my forms work with Twitter Bootstrap. So, a little tinkering, a quick pull request to ZF2 to allow the definition of arbitrary options and I came up with some useful View Helpers that can be dropped into a project and used.

He includes the code for the sample class ("MyForm") and highlights the "bootstrap" portions of each element's configuration and walks you through some other handy features of his helpers: auto-rendering forms, a "row" helper and a "collection" helper to help organize the form structure.