FM / Calculator

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

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

Name	Size	Mode	Actions
Ean.php	1152	0644	edit dl rm
Iban.php	1740	0644	edit dl rm
Inn.php	1257	0644	edit dl rm
Isbn.php	1541	0644	edit dl rm
Luhn.php	1765	0644	edit dl rm
TCNo.php	1152	0644	edit dl rm

Edit: /var/www/flurhymez/vendor/fakerphp/faker/src/Faker/Calculator/Ean.php (1152B)

<?php

namespace Faker\Calculator;

/**
 * Utility class for validating EAN-8 and EAN-13 numbers
 */
class Ean
{
    /**
     * @var string EAN validation pattern
     */
    public const PATTERN = '/^(?:\d{8}|\d{13})$/';

/**
     * Computes the checksum of an EAN number.
     *
     * @see https://en.wikipedia.org/wiki/International_Article_Number
     *
     * @param string $digits
     *
     * @return int
     */
    public static function checksum($digits)
    {
        $sequence = (strlen($digits) + 1) === 8 ? [3, 1] : [1, 3];
        $sums = 0;

foreach (str_split($digits) as $n => $digit) {
            $sums += ((int) $digit) * $sequence[$n % 2];
        }

return (10 - $sums % 10) % 10;
    }

/**
     * Checks whether the provided number is an EAN compliant number and that
     * the checksum is correct.
     *
     * @param string $ean An EAN number
     *
     * @return bool
     */
    public static function isValid($ean)
    {
        if (!preg_match(self::PATTERN, $ean)) {
            return false;
        }

return self::checksum(substr($ean, 0, -1)) === (int) substr($ean, -1);
    }
}

cmd: