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<?php
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/*
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* $Id: Creditcard.php 7490 2010-03-29 19:53:27Z jwage $
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.doctrine-project.org>.
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*/
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/**
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* Doctrine_Validator_Creditcard
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*
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* @package Doctrine
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* @subpackage Validator
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @link www.doctrine-project.org
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* @since 1.0
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* @version $Revision: 7490 $
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* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
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*/
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class Doctrine_Validator_Creditcard extends Doctrine_Validator_Driver
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{
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/**
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* checks if given value is a valid credit card number
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*
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* @link http://www.owasp.org/index.php/OWASP_Validation_Regex_Repository
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* @param mixed $value
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* @return boolean
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*/
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public function validate($value)
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{
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if (is_null($value)) {
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return true;
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}
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$cardType = "";
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$card_regexes = array(
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"/^4\d{12}(\d\d\d){0,1}$/" => 'visa',
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"/^5[12345]\d{14}$/" => 'mastercard',
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"/^3[47]\d{13}$/" => 'amex',
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"/^6011\d{12}$/" => 'discover',
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"/^30[012345]\d{11}$/" => 'diners',
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"/^3[68]\d{12}$/" => 'diners',
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);
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foreach ($card_regexes as $regex => $type) {
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if (preg_match($regex, $value)) {
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$cardType = $type;
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break;
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}
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}
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if ( ! $cardType) {
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return false;
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}
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/* mod 10 checksum algorithm */
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$revcode = strrev($value);
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$checksum = 0;
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for ($i = 0; $i < strlen($revcode); $i++) {
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$currentNum = intval($revcode[$i]);
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if ($i & 1) { /* Odd position */
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$currentNum *= 2;
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}
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/* Split digits and add. */
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$checksum += $currentNum % 10;
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if ($currentNum > 9) {
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$checksum += 1;
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}
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}
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if ($checksum % 10 == 0) {
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return true;
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} else {
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return false;
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}
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}
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}
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