Package to validate various data. It includes:
* numbers (min/max, decimal or not)
* email (syntax, domain check)
* string (predefined type alpha upper and/or lowercase, numeric,...)
* date (min, max) (With the Date module installed)
* uri (RFC2396)
* possibility valid multiple data with a single method call (::multiple)

WWW: http://pear.php.net/package/Validate