The input
with type image
is actually a submit button that uses an image. See here https://developer.mozilla.org/en-US/docs/Web/HTML/Element/Input
It's not the same as an img
tag.
So depends on what you want to render.
In general, I think it's a bit easier to work with Zend_Form_Decorator_View_Script
since you have better control of your HTML. See here: http://framework.zend.com/manual/1.12/en/zend.form.standardDecorators.html#zend.form.standardDecorators.viewScript