Formcat, PHP, Smarty plug-in for client side form validation

Formcat is a class for performing form validation on the client side. Its goal is to generate Javascript code to validate forms before they are submited to the server. It works as a plug-in for the Smarty template engine. It is a good complement SmartyValidate plug-in that performs server side validation. It supports many built-in validation criteria: empty, range, length, checkbox, radio button, integer, float, email, credit card, list menu, date, date comparison, equality between fields, file size, file type, custom validator calls. {formcat ...} tags can be located anywhere in the templates, regardless of where the corresponding fields are located in the form. http://www.phpclasses.org/package/2051-PHP-Smarty-plug-in-for-client-side-form-validation.html