Viewing file:  TCNo.php (1.34 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
<?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 $tcNo
* @return boolean
*/
public static function isValid($tcNo)
{
return self::checksum(substr($tcNo, 0, -2)) === substr($tcNo, -2, 2);
}
}
|