Merge branch 'hotfix/154' into develop

Forward port #154

CHANGELOG.md

@@ -26,6 +26,13 @@ All notable changes to this project will be documented in this file, in reverse
 
 - Nothing.
 
+### Changes
+
+- [#154](https://github.com/zendframework/zend-validator/pull/154) updates the
+  `CreditCard` validator to allow 19 digit Discover card values, and 13 and 19
+  digit Visa card values, which are now allowed (see
+  https://en.wikipedia.org/wiki/Payment_card_number).
+
 ### Deprecated
 
 - Nothing.

src/CreditCard.php

@@ -83,14 +83,14 @@ class CreditCard extends AbstractValidator
         self::AMERICAN_EXPRESS => [15],
         self::DINERS_CLUB      => [14],
         self::DINERS_CLUB_US   => [16],
-        self::DISCOVER         => [16],
+        self::DISCOVER         => [16, 19],
         self::JCB              => [15, 16],
         self::LASER            => [16, 17, 18, 19],
         self::MAESTRO          => [12, 13, 14, 15, 16, 17, 18, 19],
         self::MASTERCARD       => [16],
         self::SOLO             => [16, 18, 19],
         self::UNIONPAY         => [16, 17, 18, 19],
-        self::VISA             => [16],
+        self::VISA             => [13, 16, 19],
     ];
 
     /**