CreditCard(3pm) 					User Contributed Perl Documentation					   CreditCard(3pm)

NAME

       "Business::CreditCard" - Validate/generate credit card checksums/names

SYNOPSIS

	   use Business::CreditCard;

	   print validate("5276 4400 6542 1319");
	   print cardtype("5276 4400 6542 1319");
	   print generate_last_digit("5276 4400 6542 131");

       Business::CreditCard is available at a CPAN site near you.

DESCRIPTION

       These subroutines tell you whether a credit card number is self-consistent -- whether the last digit of the number is a valid checksum for
       the preceding digits.

       The validate() subroutine returns 1 if the card number provided passes the checksum test, and 0 otherwise.

       The cardtype() subroutine returns a string containing the type of card.	The list of possible return values is more comprehensive than it
       used to be, but additions are still most welcome.

       Possible return values are:

	 VISA card
	 MasterCard
	 Discover card
	 American Express card
	 enRoute
	 JCB
	 BankCard
	 Switch
	 Solo
	 China Union Pay
	 Laser
	 Unknown

       "Not a credit card" is returned on obviously invalid data values.

       Versions before 0.31 may also have returned "Diner's Club/Carte Blanche" (these cards are now recognized as "Discover card").

       As of 0.30, cardtype() will accept a partial card masked with "x", "X', ".", "*" or "_".  Only the first 2-6 digits and the length are
       significant; whitespace and dashes are removed.	To recognize just Visa, MasterCard and Amex, you only need the first two digits; to
       recognize almost all cards except some Switch cards, you need the first four digits, and to recognize all cards including the remaining
       Switch cards, you need the first six digits.

       The generate_last_digit() subroutine computes and returns the last digit of the card given the preceding digits.  With a 16-digit card, you
       provide the first 15 digits; the subroutine returns the sixteenth.

       This module does not tell you whether the number is on an actual card, only whether it might conceivably be on a real card.  To verify
       whether a card is real, or whether it's been stolen, or to actually process charges, you need a Merchant account.  See
       Business::OnlinePayment.

       These subroutines will also work if you provide the arguments as numbers instead of strings, e.g. "validate(5276440065421319)".

PROCESSING AGREEMENTS

       Credit card issuers have recently been forming agreements to process cards on other networks, in which one type of card is processed as
       another card type.

       By default, Business::CreditCard returns the type the card should be treated as in the US and Canada.  You can change this to return the
       type the card should be treated as in a different country by setting $Business::CreditCard::Country to your two-letter country code.  This
       is probably what you want to determine if you accept the card, or which merchant agreement it is processed through.

       You can also set $Business::CreditCard::Country to a false value such as the empty string to return the "base" card type.  This is probably
       only useful for informational purposes when used along with the default type.

       Here are the currently known agreements:

       Most Diner's club is now identified as Discover.  (This supercedes the earlier identification of some Diner's club cards as MasterCard
       inside the US and Canada.)
       JCB cards in the 3528-3589 range are identified as Discover inside the US and Canada.
       China Union Pay cards are identified as Discover cards outside China.

NOTE ON INTENDED PURPOSE

       This module is for verifying real world credit cards.  It is NOT a pedantic implementation of the ISO 7812 standard, a general-purpose LUHN
       implementation, or intended for use with "creditcard-like account numbers".

AUTHOR

       Jon Orwant

       The Perl Journal and MIT Media Lab

       orwant@tpj.com

       Current maintainer is Ivan Kohler <ivan-business-creditcard@420.am>.  Please don't bother Jon with emails about this module.

       Lee Lawrence <LeeL@aspin.co.uk>, Neale Banks <neale@lowendale.com.au> and Max Becker <Max.Becker@firstgate.com> contributed support for
       additional card types.  Lee also contributed a working test.pl.	Alexandr Ciornii <alexchorny@gmail.com> contributed code cleanups.

COPYRIGHT AND LICENSE

       Copyright (C) 1995,1996,1997 Jon Orwant Copyright (C) 2001-2006 Ivan Kohler Copyright (C) 2007-2009 Freeside Internet Services, Inc.

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.8 or,
       at your option, any later version of Perl 5 you may have available.

SEE ALSO

       Business::CreditCard::Object is a wrapper around Business::CreditCard providing an OO interface.  Assistance integrating this into the base
       Business::CreditCard distribution is welcome.

       Business::OnlinePayment is a framework for processing online payments including modules for various payment gateways.

perl v5.10.0							    2009-09-28							   CreditCard(3pm)