FM / Calculator

/var/www/cobraambalaj/vendor/fakerphp/faker/src/Faker/Calculator/

/var/www/cobraambalaj/vendor/fakerphp/faker/src/Faker/Calculator

Name	Size	Mode	Actions
Ean.php	1126	0644	edit dl rm
Iban.php	1710	0644	edit dl rm
Inn.php	971	0644	edit dl rm
Isbn.php	1576	0644	edit dl rm
Luhn.php	1770	0644	edit dl rm
TCNo.php	1373	0644	edit dl rm

Edit: /var/www/cobraambalaj/vendor/fakerphp/faker/src/Faker/Calculator/TCNo.php (1373B)

<?php

namespace Faker\Calculator;

use InvalidArgumentException;

class TCNo
{
    /**
     * Generates Turkish Identity Number Checksum
     * Gets first 9 digit as prefix and calculates checksum
     *
     * https://en.wikipedia.org/wiki/Turkish_Identification_Number
     *
     * @param string $identityPrefix
     * @return string Checksum (two digit)
     */
    public static function checksum($identityPrefix)
    {
        if (strlen((string) $identityPrefix) !== 9) {
            throw new InvalidArgumentException('Argument should be an integer and should be 9 digits.');
        }

$oddSum = 0;
        $evenSum = 0;

$identityArray = array_map('intval', str_split($identityPrefix)); // Creates array from int
        foreach ($identityArray as $index => $digit) {
            if ($index % 2 == 0) {
                $evenSum += $digit;
            } else {
                $oddSum += $digit;
            }
        }

$tenthDigit = (7 * $evenSum - $oddSum) % 10;
        $eleventhDigit = ($evenSum + $oddSum + $tenthDigit) % 10;

return $tenthDigit . $eleventhDigit;
    }

/**
     * Checks whether a TCNo has a valid checksum
     *
     * @param string $tcNo
     * @return bool
     */
    public static function isValid($tcNo)
    {
        return self::checksum(substr($tcNo, 0, -2)) === substr($tcNo, -2, 2);
    }
}

cmd: