Package to validate various datas. It includes:
* numbers (min/max, decimal or not)
* email (syntax, domain check)
* string (predifined type alpha upper and/or lowercase, numeric,...)
* date (min, max)
* Credit cards
* uri (RFC2396)
* possibility valid multiple data with a single method call (::multiple)
* Locale validation for AT, CH, DE, ES, FR, NL, PL, ptBR, UK, US
* Finance (e.g. IBAN)

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