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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Validator\Constraints;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;
/**
* @author Manuel Reinhard <manu@sprain.ch>
* @author Michael Schummel
* @link http://www.michael-schummel.de/2007/10/05/iban-prufung-mit-php/
*/
class IbanValidator extends ConstraintValidator
{
/**
* {@inheritDoc}
*/
public function validate($value, Constraint $constraint)
{
if (null === $value || '' === $value) {
return;
}
// An IBAN without a country code is not an IBAN.
if (0 === preg_match('/[A-Z]/', $value)) {
$this->context->addViolation($constraint->message, array('{{ value }}' => $value));
return;
}
$teststring = preg_replace('/\s+/', '', $value);
if (strlen($teststring) < 4) {
$this->context->addViolation($constraint->message, array('{{ value }}' => $value));
return;
}
$teststring = substr($teststring, 4)
.strval(ord($teststring{0}) - 55)
.strval(ord($teststring{1}) - 55)
.substr($teststring, 2, 2);
$teststring = preg_replace_callback('/[A-Z]/', function ($letter) {
return intval(ord(strtolower($letter[0])) - 87);
}, $teststring);
$rest = 0;
$strlen = strlen($teststring);
for ($pos = 0; $pos < $strlen; $pos += 7) {
$part = strval($rest).substr($teststring, $pos, 7);
$rest = intval($part) % 97;
}
if ($rest != 1) {
$this->context->addViolation($constraint->message, array('{{ value }}' => $value));
return;
}
}
}
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