php kodas, tikrinantis įmonės registracijos numerį

function validateCompanyRegistrationNumber($number) { if (strlen($number) != 9) { return false; } $weights = [1, 2, 3, 4, 5, 6, 7, 8]; $sum = 0; for ($i = 0; $i < 8; $i++) { $sum += $weights[$i] * (int) $number[$i]; } $checkDigit = $sum % 11; if ($checkDigit == 10) { $checkDigit = 0; } return $checkDigit == (int) $number[8]; } $number = "123456789"; if (validateCompanyRegistrationNumber($number)) { echo "$number is valid."; } else { echo "$number is not valid."; 

}