Zend: best way to implement custom form validation?
<p>I have a few custom form validation rules I wish to apply. Things like ensuring the password has one capital letter, at least one number, and a symbol.</p>

<p>Where would be best to implement these custom validation rules?</p>

<p>I am currently validating them in a controller, but obviously that won't scale very well when I expand. So I was going to implement them as view helpers.</p>

<p>I don't have too much experience with zend_form. Is there a way to set a custom validation handler when constructing the form object?</p>

<p>Thanks!</p>
