<?php defined('SYSPATH') OR die('No direct script access.'); /** * Credit card validation configuration. * * Options for each credit card: * length - All the allowed card number lengths, in a comma separated string * prefix - The digits the card needs to start with, in regex format * luhn - Enable or disable card number validation by the Luhn algorithm */ return array( 'default' => array( 'length' => '13,14,15,16,17,18,19', 'prefix' => '', 'luhn' => TRUE, ), 'american express' => array( 'length' => '15', 'prefix' => '3[47]', 'luhn' => TRUE, ), 'diners club' => array( 'length' => '14,16', 'prefix' => '36|55|30[0-5]', 'luhn' => TRUE, ), 'discover' => array( 'length' => '16', 'prefix' => '6(?:5|011)', 'luhn' => TRUE, ), 'jcb' => array( 'length' => '15,16', 'prefix' => '3|1800|2131', 'luhn' => TRUE, ), 'maestro' => array( 'length' => '16,18', 'prefix' => '50(?:20|38)|6(?:304|759)', 'luhn' => TRUE, ), 'mastercard' => array( 'length' => '16', 'prefix' => '5[1-5]', 'luhn' => TRUE, ), 'visa' => array( 'length' => '13,16', 'prefix' => '4', 'luhn' => TRUE, ), );