go-credit-card

Basic credit card validation using the Luhn algorithm

Currently identifies the following credit card companies:

• American Express
• Bankcard
• China Unionpay
• Dankort
• Diners Club Carte Blanche
• Diners Club enRoute
• Diners Club International
• Discover
• InterPayment
• InstaPayment
• JCB
• Maestro
• MasterCard
• Visa
• Visa Electron

Installation

go get github.com/durango/go-credit-card

Quick Start

// Initialize a new card:
card := creditcard.Card{Number: "4242424242424242", Cvv: "11111", Month: "02", Year: "2016"}

// Retrieve the card's method (which credit card company this card belongs to)
err := card.Method() // card.Company({Short: "visa", Long: "Visa"})

// Display last four digits
lastFour, err := card.LastFour() // 4242

// Validate the card's number (without capturing)
err := card.Validate() // will return an error due to not allowing test cards

err := card.Validate(true) // this will work though