Respect\Validation\Rules\Pis::isValid()

Complexity

Conditions	6
Paths	6

Size

Total Lines	23
Code Lines	12

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	13
CRAP Score	6

Importance

Changes

0

<?php
    public function isValid($input): bool
    {
        if (!is_scalar($input)) {
            return false;
        }

        $digits = preg_replace('/\D/', '', $input);
        if (11 != mb_strlen($digits) || preg_match("/^{$digits[0]}{11}$/", $digits)) {
            return false;
        }

        $multipliers = [3, 2, 9, 8, 7, 6, 5, 4, 3, 2];

        $summation = 0;
        for ($position = 0; $position < 10; ++$position) {
            $summation += $digits[$position] * $multipliers[$position];
        }

        $checkDigit = (int) $digits[10];

        $modulo = $summation % 11;

        return $checkDigit === (($modulo < 2) ? 0 : 11 - $modulo);
    }