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Direktori : /home2/selectio/www/mm-tailor-billing/vendor/zendframework/zend-validator/src/Barcode/ |
Current File : //home2/selectio/www/mm-tailor-billing/vendor/zendframework/zend-validator/src/Barcode/Issn.php |
<?php /** * Zend Framework (http://framework.zend.com/) * * @link http://github.com/zendframework/zf2 for the canonical source repository * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com) * @license http://framework.zend.com/license/new-bsd New BSD License */ namespace Zend\Validator\Barcode; class Issn extends AbstractAdapter { /** * Constructor for this barcode adapter */ public function __construct() { $this->setLength([8, 13]); $this->setCharacters('0123456789X'); $this->setChecksum('gtin'); } /** * Allows X on length of 8 chars * * @param string $value The barcode to check for allowed characters * @return bool */ public function hasValidCharacters($value) { if (strlen($value) != 8) { if (strpos($value, 'X') !== false) { return false; } } return parent::hasValidCharacters($value); } /** * Validates the checksum * * @param string $value The barcode to check the checksum for * @return bool */ public function hasValidChecksum($value) { if (strlen($value) == 8) { $this->setChecksum('issn'); } else { $this->setChecksum('gtin'); } return parent::hasValidChecksum($value); } /** * Validates the checksum () * ISSN implementation (reversed mod11) * * @param string $value The barcode to validate * @return bool */ protected function issn($value) { $checksum = substr($value, -1, 1); $values = str_split(substr($value, 0, -1)); $check = 0; $multi = 8; foreach ($values as $token) { if ($token == 'X') { $token = 10; } $check += ($token * $multi); --$multi; } $check %= 11; $check = ($check === 0 ? 0 : (11 - $check)); if ($check == $checksum) { return true; } elseif (($check == 10) && ($checksum == 'X')) { return true; } return false; } }