DummyGenerator\Core\Calculator\LuhnCalculator::checksum()

Complexity

Conditions	3
Paths	4

Size

Total Lines	14
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	8
CRAP Score	3

Importance

Changes

0

<?php
    protected function checksum(string $number): int
    {
        $length = strlen($number);
        $sum = 0;

        for ($i = $length - 1; $i >= 0; $i -= 2) {
            $sum += (int) $number[$i];
        }

        for ($i = $length - 2; $i >= 0; $i -= 2) {
            $sum += array_sum(str_split((string) ((int) $number[$i] * 2)));

It seems like str_split((string)(int)$number[$i] * 2) can also be of type true; however, parameter $array of array_sum() does only seem to accept array, maybe add an additional type check?

        }

        return $sum % 10;
    }