/**
* 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);
}
/**
* Check EAN Code
*
* @param string $code EAN Code to validate
* @return Returns TRUE if the EAN validates, otherwise FALSE
*/
public static function checkEan($code)
{
return EanValidator\EanValidator::validate($code);
}
