IsoCodes\Uid::validate()

Complexity

Conditions	7
Paths	12

Size

Total Lines

31

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    public static function validate($uid)
    {
        $multipliers = [5, 4, 3, 2, 7, 6, 5, 4];
        $result = 0;
        $uid = Utils::unDecorate(strval($uid), [' ', '.', '-', '—']);

        if (str_contains($uid, 'CHE') || str_contains($uid, 'ADM')) {
            $uid = substr(strval($uid), 3, 9);
        }

        $uid = substr($uid, 0, 9);

        if (9 != strlen($uid)) {
            return false;
        }

        foreach ($multipliers as $key => $multiplier) {
            if (!is_numeric($uid[$key])) {
                return false;
            }
            $result += $uid[$key] * $multiplier;
        }

        $rest = $result % 11;

        if (0 === $rest) {
            return true;
        }

        return intval($uid[8]) === 11 - $rest;
    }
}