[5146] | 1 | <?php |
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| 2 | /** |
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| 3 | * Zend Framework |
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| 4 | * |
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| 5 | * LICENSE |
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| 6 | * |
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| 7 | * This source file is subject to the new BSD license that is bundled |
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| 8 | * with this package in the file LICENSE.txt. |
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| 9 | * It is also available through the world-wide-web at this URL: |
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| 10 | * http://framework.zend.com/license/new-bsd |
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| 11 | * If you did not receive a copy of the license and are unable to |
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| 12 | * obtain it through the world-wide-web, please send an email |
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| 13 | * to license@zend.com so we can send you a copy immediately. |
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| 14 | * |
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| 15 | * @category Zend |
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| 16 | * @package Zend_Validate |
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| 17 | * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com) |
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| 18 | * @license http://framework.zend.com/license/new-bsd New BSD License |
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| 19 | * @version $Id: Ccnum.php 20096 2010-01-06 02:05:09Z bkarwin $ |
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| 20 | */ |
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| 21 | |
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| 22 | /** |
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| 23 | * @see Zend_Validate_Abstract |
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| 24 | */ |
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| 25 | require_once 'Zend/Validate/Abstract.php'; |
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| 26 | |
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| 27 | /** |
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| 28 | * @category Zend |
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| 29 | * @package Zend_Validate |
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| 30 | * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com) |
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| 31 | * @license http://framework.zend.com/license/new-bsd New BSD License |
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| 32 | */ |
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| 33 | class Zend_Validate_Ccnum extends Zend_Validate_Abstract |
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| 34 | { |
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| 35 | /** |
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| 36 | * Validation failure message key for when the value is not of valid length |
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| 37 | */ |
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| 38 | const LENGTH = 'ccnumLength'; |
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| 39 | |
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| 40 | /** |
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| 41 | * Validation failure message key for when the value fails the mod-10 checksum |
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| 42 | */ |
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| 43 | const CHECKSUM = 'ccnumChecksum'; |
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| 44 | |
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| 45 | /** |
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| 46 | * Digits filter for input |
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| 47 | * |
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| 48 | * @var Zend_Filter_Digits |
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| 49 | */ |
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| 50 | protected static $_filter = null; |
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| 51 | |
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| 52 | /** |
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| 53 | * Validation failure message template definitions |
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| 54 | * |
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| 55 | * @var array |
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| 56 | */ |
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| 57 | protected $_messageTemplates = array( |
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| 58 | self::LENGTH => "'%value%' must contain between 13 and 19 digits", |
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| 59 | self::CHECKSUM => "Luhn algorithm (mod-10 checksum) failed on '%value%'" |
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| 60 | ); |
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| 61 | |
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| 62 | public function __construct() |
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| 63 | { |
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| 64 | trigger_error('Using the Ccnum validator is deprecated in favor of the CreditCard validator'); |
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| 65 | } |
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| 66 | |
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| 67 | /** |
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| 68 | * Defined by Zend_Validate_Interface |
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| 69 | * |
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| 70 | * Returns true if and only if $value follows the Luhn algorithm (mod-10 checksum) |
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| 71 | * |
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| 72 | * @param string $value |
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| 73 | * @return boolean |
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| 74 | */ |
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| 75 | public function isValid($value) |
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| 76 | { |
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| 77 | $this->_setValue($value); |
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| 78 | |
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| 79 | if (null === self::$_filter) { |
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| 80 | /** |
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| 81 | * @see Zend_Filter_Digits |
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| 82 | */ |
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| 83 | require_once 'Zend/Filter/Digits.php'; |
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| 84 | self::$_filter = new Zend_Filter_Digits(); |
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| 85 | } |
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| 86 | |
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| 87 | $valueFiltered = self::$_filter->filter($value); |
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| 88 | |
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| 89 | $length = strlen($valueFiltered); |
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| 90 | |
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| 91 | if ($length < 13 || $length > 19) { |
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| 92 | $this->_error(self::LENGTH); |
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| 93 | return false; |
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| 94 | } |
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| 95 | |
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| 96 | $sum = 0; |
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| 97 | $weight = 2; |
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| 98 | |
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| 99 | for ($i = $length - 2; $i >= 0; $i--) { |
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| 100 | $digit = $weight * $valueFiltered[$i]; |
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| 101 | $sum += floor($digit / 10) + $digit % 10; |
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| 102 | $weight = $weight % 2 + 1; |
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| 103 | } |
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| 104 | |
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| 105 | if ((10 - $sum % 10) % 10 != $valueFiltered[$length - 1]) { |
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| 106 | $this->_error(self::CHECKSUM, $valueFiltered); |
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| 107 | return false; |
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| 108 | } |
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| 109 | |
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| 110 | return true; |
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| 111 | } |
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| 112 | } |
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