/** * Validate * * Determines if the EAN value is valid, IE the check digit * matches. * * @param string $ean EAN to be inspected * @throws UpcException If the EAN value is less than 12 digits. 12 * Digit values will be padded to 13. * @return Returns TRUE if the UPC matches the UPC standard, * FALSE otherwise. */ public static function validate($ean) { $ean = trim($ean); $length = strlen($ean); if ($length < 13) { throw new EanException\EanException('EAN is less than 13 digits in length. EAN: ' . $ean . ' ( length = ' . strlen($ean) . ')', EanException\EanException::CODE_INVALID); } else { if ($length > 13) { throw new EanException\EanException('EAN is more than 13 digits in length. EAN: ' . $ean . ' ( length = ' . strlen($ean) . ')', EanException\EanException::CODE_INVALID); } } if (!is_numeric($ean)) { throw new EanException\EanException('EAN can only contain numbers. EAN: ' . $ean, EanException\EanException::CODE_CONTAINS_CHARACTERS); } $originalCheck = substr($ean, -1); $checkDigit = EanValidator::getCheckDigit($ean); return intval($checkDigit) === intval($originalCheck); }
/** * checkCode * * Check Code will attempt to smartly detect the code type, * IE UPC, EAN or ISBN10/13. * * Since most 13 DIGIT EAN's also validate as an ISBN, the type will be ISBN * if the code validates as both. * * @param string $code Code to check. * @return Returns an array with the code type, check digit and if * the code is an ISBN, the ISBN parts. FALSE otherwise. */ public static function checkCode($code) { $isbn = array(); $upcValid = false; $upcEValid = false; $eanValid = false; $isbnValid = false; try { $upcValid = ProductValidator::checkUpcA($code); } catch (UpcException\UpcException $e) { } try { $upcEValid = ProductValidator::checkUpcE($code); } catch (UpcException\UpcException $e) { } try { $eanValid = ProductValidator::checkEan($code); } catch (EanException\EanException $e) { } try { $isbnValid = ProductValidator::checkIsbn($code, $isbn); } catch (IsbnException\IsbnException $e) { } $type = ''; $checkDigit = 0; // UPC Code if ($upcValid) { $type = 'UPC-A'; $checkDigit = UpcValidator\UpcValidator::getCheckDigit($code); } else { if ($upcEValid) { $type = 'UPC-E - ' . strlen($code); $code = UpcEValidator\UpcEExpander::expand($code); $checkDigit = UpcEValidator\UpcEValidator::getCheckDigit($code); } else { if ($eanValid) { $type = 'EAN'; $checkDigit = EanValidator\EanValidator::getCheckDigit($code); } else { if ($isbnValid && !$eanValid) { $type = 'ISBN'; $checkDigit = IsbnValidator\IsbnValidator::getCheckDigit($code); } else { return false; } } } } // Return array of values return array('type' => $type, 'checkDigit' => $checkDigit, 'isbn' => $isbn); }