FM / Calculator

/home/techb158/dev.balacoffee.com/vendor/fzaninotto/faker/src/Faker/Calculator/

/home/techb158/dev.balacoffee.com/vendor/fzaninotto/faker/src/Faker/Calculator

Name	Size	Mode	Actions
Ean.php	1225	0644	edit dl rm
Iban.php	1716	0644	edit dl rm
Inn.php	1038	0644	edit dl rm
Luhn.php	1763	0644	edit dl rm
TCNo.php	1375	0644	edit dl rm

Edit: /home/techb158/dev.balacoffee.com/vendor/fzaninotto/faker/src/Faker/Calculator/Inn.php (1038B)

<?php
namespace Faker\Calculator;

class Inn
{
    /**
     * Generates INN Checksum
     *
     * https://ru.wikipedia.org/wiki/%D0%98%D0%B4%D0%B5%D0%BD%D1%82%D0%B8%D1%84%D0%B8%D0%BA%D0%B0%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D1%8B%D0%B9_%D0%BD%D0%BE%D0%BC%D0%B5%D1%80_%D0%BD%D0%B0%D0%BB%D0%BE%D0%B3%D0%BE%D0%BF%D0%BB%D0%B0%D1%82%D0%B5%D0%BB%D1%8C%D1%89%D0%B8%D0%BA%D0%B0
     *
     * @param string $inn
     * @return string Checksum (one digit)
     */
    public static function checksum($inn)
    {
        $multipliers = array(1 => 2, 2 => 4, 3 => 10, 4 => 3, 5 => 5, 6 => 9, 7 => 4, 8 => 6, 9 => 8);
        $sum = 0;
        for ($i = 1; $i <= 9; $i++) {
            $sum += intval(substr($inn, $i-1, 1)) * $multipliers[$i];
        }
        return strval(($sum % 11) % 10);
    }

/**
     * Checks whether an INN has a valid checksum
     *
     * @param string $inn
     * @return boolean
     */
    public static function isValid($inn)
    {
        return self::checksum(substr($inn, 0, -1)) === substr($inn, -1, 1);
    }
}

cmd: