This class provides methods to validate: - ISBN (International Standard Book Number) - ISSN (International Standard Serial Number) - ISMN (International Standard Music Number) - ISRC (International Standard Recording Code) - EAN/UCC-8 number - EAN/UCC-13 number - EAN/UCC-14 number - UCC-12 (U.P.C.) ID number - SSCC (Serial Shipping Container Code) WWW: https://pear.php.net/package/Validate_ISPN