NAME

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

SYNOPSIS

use Business::CreditCard;

say cardtype("5276 4400 6542 1319");  # MasterCard
say validate("5276 4400 6542 1319");  # True

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.

SUBROUTINES

cardtype

say cardtype("5276 4400 6542 1319");  # MasterCard

The cardtype subroutine returns a CardTypes enum containing the type of card: in Bool contexts, a True value means a valid card type has been detected.

The credit card number can be given as a string, or as a number. When given as a string, the letter "x" can be used to indicate a digit without meaning, and whitespace and dashes will be removed before matching.

Prefix recognition is done by 6, 4 or 2 digit prefixes. The following named arguments can be specified:

• :country

An optional two-letter country code for which to return the card type, since some cards are reported with a different name according to country. Default is "US".

• :receipt

If specified with a True value, the "receipt" name of the card will be returned. This is currently only applicable for some Discover cards that will be shown as "PayPal" on receipts. Default is False.

• :obsolete

A Boolean flag whether to report an obsolete name for the given card number. By default False. If specified with a True value, will report the card type under its original name, rather then the current rebranded card.

validate

use Business::CreditCard;

say validate("5276 4400 6542 1319");  # True

The validate subroutine returns True if the card number provided passes the checksum test, and False otherwise.

ACKNOWLEDGEMENTS

This distribution owes a great debt to Perl's Business::CreditCard, originally written by Jon Orwant, and currently maintained by Ivan Kohler.

AUTHORS

• Fayland Lam

• Elizabeth Mattijsen

COPYRIGHT AND LICENSE

Copyright 2015 - 2017 Fayland Lam

Copyright 2024 Raku Community

This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.