Hi,
I need to have custom validation for a form. For example one field can be required or not depending on the values from other fields. Should I develop custom validators - but to be somehow connected to more field - or override is "isValid" form function?

Thanks

make your own validator and pass to him fields you need..
dont hardcore that thing into validator class because its not reusable then and you will be breaking oop paterns

this will get you started Custom validators for Zend_Form_Element Christer’s blog o’ fun