<?php
/**
* ????????? ??? (????????????????? ????? ?????????????????) ?? ????????????
*/
return function ($n)
{
if (! is_scalar($n))
{
//triggertrigger_error('Scalar type expected, ' . gettype($n) . ' given ', E_USER_WARNING);
return false;
}
$n = strval($n);
if (! in_array(strlen($n), array(10, 12)) || ! ctype_digit($n))
{
return false;
}
if (strlen($n) == 10)
{
$sum = 0;
foreach (array(2, 4, 10, 3, 5, 9, 4, 6, 8) as $i => $weight)
{
$sum += $weight * substr($n, $i, 1);
}
return $sum % 11 % 10 == substr($n, 9, 1);
}
#??? 12 ??????:
$sum1 = $sum2 = 0;
foreach (array(7, 2, 4, 10, 3, 5, 9, 4, 6, 8) as $i => $weight)
{
$sum1 += $weight * substr($n, $i, 1);
}
foreach (array(3, 7, 2, 4, 10, 3, 5, 9, 4, 6, 8) as $i => $weight)
{
$sum2 += $weight * substr($n, $i, 1);
}
return ($sum1 % 11 % 10) . ($sum2 % 11 % 10) == substr($n, 10, 2);
};?>
|
Download
