lacus/cnpj-dv
Utility to calculate check digits on CNPJ (Brazilian Business Tax ID)
时间：2026-03-24 03:22
lacus/cpf-dv
Utility to calculate check digits on CPF (Brazilian Individual's Taxpayer ID)
时间：2026-03-21 14:20
choval/damm
Damm algorithm functions, a check digit algorithm that detects single-digit errors and adjacent transposition errors
时间：2019-08-16 04:31
pmigut/gtin-validator
This library is a set of static methods for GTIN validation. Methods return true if given string is publicly available GTIN-8, GTIN-12, GTIN-13 or GTIN-14 code. Checks include format, check digit and prefix.
时间：未知
byrokrat/checkdigit
Helper classes to calculate and validate ckecksums
时间：未知