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<?php
/*
* $Id: Creditcard.php 10831 2013-05-29 19:32:17Z btowles $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.doctrine-project.org>.
*/
/**
* Doctrine_Validator_Creditcard
*
* @package Doctrine
* @subpackage Validator
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.doctrine-project.org
* @since 1.0
* @version $Revision: 7490 $
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
*/
class Doctrine_Validator_Creditcard extends Doctrine_Validator_Driver
{
/**
* checks if given value is a valid credit card number
*
* @link http://www.owasp.org/index.php/OWASP_Validation_Regex_Repository
* @param mixed $value
* @return boolean
*/
public function validate($value)
{
if (is_null($value)) {
return true;
}
$cardType = "";
$card_regexes = array(
"/^4\d{12}(\d\d\d){0,1}$/" => 'visa',
"/^5[12345]\d{14}$/" => 'mastercard',
"/^3[47]\d{13}$/" => 'amex',
"/^6011\d{12}$/" => 'discover',
"/^30[012345]\d{11}$/" => 'diners',
"/^3[68]\d{12}$/" => 'diners',
);
foreach ($card_regexes as $regex => $type) {
if (preg_match($regex, $value)) {
$cardType = $type;
break;
}
}
if ( ! $cardType) {
return false;
}
/* mod 10 checksum algorithm */
$revcode = strrev($value);
$checksum = 0;
for ($i = 0; $i < strlen($revcode); $i++) {
$currentNum = intval($revcode[$i]);
if ($i & 1) { /* Odd position */
$currentNum *= 2;
}
/* Split digits and add. */
$checksum += $currentNum % 10;
if ($currentNum > 9) {
$checksum += 1;
}
}
if ($checksum % 10 == 0) {
return true;
} else {
return false;
}
}
}