Zend_Form: add custom validators via .ini config
To add custom validators to a Zend_Form via .ini form configuration file, proceed as follow: identify the path of your custom validators (ex: /library/validators/) identify your custom validator prefix (ex: all my custom validator classes start with ‘Validate_’) open form .ini configuration file and add the following two lines directly at root level (ie. do NOT attach them to an element but rather to the form itself => at very top of the file): elementPrefixPath.validate.prefix = “<YOUR VALIDATORS PREFIX>” elementPrefixPath.validate.path = “<PATH TO VALIDATORS>” In my case: elementPrefixPath.validate.prefix = “Validate” elementPrefixPath.validate.path = “validators/” still in .ini file, simply add your [...]