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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