Folder structure, where to store forms

I'm using ZendStudio which creates an MVC structure for projects.

To create a form, I just create a PHP class and extend Zend_Form, but where is 开发者_Go百科the right location to have this form saved.

I've seen someone put it in

application/forms

with

application/models
application/views
application/controllers

Is this a best practice or is there a more logical location than this? What do you do?

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application/forms is what Zend Reference Guide recommends