salamek/barcode
Framework free barcode generator like Qr Code , PDF417,C39, C39+,C39E,C39E+,C93,S25,S25+,I25,I25+,C128,C128A,C128B,C128C,2-Digits UPC-Based Extention,5-Digits UPC-Based Extention,EAN 8,EAN 13,UPC-A,UPC-E,MSI (Variation of Plessey code)
时间：2015-05-03 16:45
stoysnet/trade-numbers
Trade Number classifier and validators. Supports EAN GTIN UPC-A and ISBN
时间：2015-04-21 21:53
dinesh/barcode
Barcode generator like Qr Code , PDF417,C39, C39+,C39E,C39E+,C93,S25,S25+,I25,I25+,C128,C128A,C128B,C128C,2-Digits UPC-Based Extention,5-Digits UPC-Based Extention,EAN 8,EAN 13,UPC-A,UPC-E,MSI (Variation of Plessey code)
时间：2013-09-07 13:59
ronanguilloux/isocodes
PHP library - Validators for standards from ISO, International Finance, Public Administrations, GS1, Book and Music Industries, Phone numbers & Zipcodes for many countries
时间：2012-10-13 13:21
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