Modulus11 algorithm implementation for PHP. The Modulus11 algorithm is used in some bank account numbers and national identity numbers.

To add this package as a dependency to your project, simply add a dependency on komakino/modulus11 to your project's composer.json file.

    {
        "require": {
            "komakino/modulus11": "*"
        }
    }

use Komakino\Modulus11\Modulus11;

The standard factors for Modulus11 calculations are [2,3,4,5,6,7], looped. In some cases other factors are used. If your implementation requires custom factors, simply supply them as a second argument to any method.

static bool validate(string|int $number, array $factors = null)

Validates a number.

Modulus11::validate('11223344'); // returns false
Modulus11::validate('12345674'); // returns true

static int calculate(string|int $partial_number, array $factors = null)

Calculates the check digit of a number.

Modulus11::calculate('1122334'); // returns 6
Modulus11::calculate('1234567'); // returns 4

static string appendCheckDigit(string|int $partial_number, array $factors = null)

Calculates the check digit and returns number with check digit appended.

Modulus11::appendCheckDigit('1122334'); // returns 11223346
Modulus11::appendCheckDigit('1234567'); // returns 12345674