IsoCodes\Sedol::validate()

Complexity

Conditions	4
Paths	4

Size

Total Lines	21
Code Lines	12

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	1

<?php
    public static function validate($value)
    {
        if (strlen($value) !== 7) {
            return false;
        }

        $char6 = substr($value, 0, 6);

        if (!preg_match('/^[0-9BCDFGHJKLMNPQRSTVWXYZ]{6}$/', $char6)) {
            return false;
        }

        $weight = [1, 3, 1, 7, 3, 9, 1];
        $sum = 0;
        for ($i = 0; $i < 6; ++$i) {
            $sum += $weight[$i] * intval($char6[$i], 36);
        }
        $check = (10 - $sum % 10) % 10;

        return $value === $char6 . $check;
    }
}