[zf] Quick and dirty validating field

gistfile1.aw

<?php

 $color = new Zend_Form_Element_Text('color');

 $color->AddValidator('Regex',false,array('/^\#[a-f0-9]{6}$/i'));
 $color->getValidator('Regex')->setMessages( array(
     Zend_Validate_Regex::NOT_MATCH =>
     '\'%value%\' is not valid.  Use a value in the form of #112233'
 ));