title: Validating dates in zend framework (comparing two)
body: <p>I'm developing a <strong>zend form</strong> for a events. I wanna validate two dates such that the first one (<code>$date_start</code>) should be greater than the current date and the second one (<code>$date_end</code>) should be greater than the first one (<code>$date_end &gt; $date_start</code>). Does anybody knows how to do it <strong>using validators</strong>?</p>