Zend Framework comes with a standard set of validation classes, which are ready for you to use. The Ccnum validator has been deprecated in favor of the CreditCard validator. For security reasons you should use CreditCard instead of Ccnum. Returns TRUE if $value is a valid date of the format 'YYYY-MM-DD'. If the optional locale option is set then the date will be validated according to the set locale. And if the optional format option is set this format is used for the validation. for details about the optional parameters see Zend_Date::isDate(). Returns TRUE if and only if $value is a floating-point value. Since Zend Framework 1.8 this validator takes into account the actual locale from browser, environment or application wide set locale. You can of course use the get/setLocale accessors to change the used locale or give it while creating a instance of this validator.