HighSpeaker/vendor/workerman/validation/library/Rules/PortugueseNif.php
2024-01-31 22:15:08 +08:00

106 lines
2.6 KiB
PHP

<?php
/*
* Copyright (c) Alexandre Gomes Gaigalas <alganet@gmail.com>
* SPDX-License-Identifier: MIT
*/
declare(strict_types=1);
namespace Respect\Validation\Rules;
use function array_keys;
use function array_map;
use function array_pop;
use function array_sum;
use function intval;
use function is_numeric;
use function is_string;
use function str_split;
use function strlen;
/**
* Validates Portugal's fiscal identification number (NIF)
*
*
* @see https://pt.wikipedia.org/wiki/N%C3%BAmero_de_identifica%C3%A7%C3%A3o_fiscal
*
* @author Gonçalo Andrade <goncalo.andrade95@gmail.com>
*/
final class PortugueseNif extends AbstractRule
{
/**
* {@inheritDoc}
*/
public function validate($input): bool
{
// Validate format and length
if (!is_string($input)) {
return false;
}
if (!is_numeric($input)) {
return false;
}
if (strlen($input) != 9) {
return false;
}
$digits = array_map(static fn (string $digit) => intval($digit), str_split($input));
// Validate first and second digits
switch ($digits[0]) {
case 4:
switch ($digits[1]) {
case 5:
break;
default:
return false;
}
break;
case 7:
switch ($digits[1]) {
case 0:
case 1:
case 2:
case 4:
case 5:
case 7:
case 8:
case 9:
break;
default:
return false;
}
break;
case 9:
switch ($digits[1]) {
case 0:
case 1:
case 8:
case 9:
break;
default:
return false;
}
break;
default:
break;
}
// Validate check digit
$checkDigit = array_pop($digits);
$digitKeys = array_keys($digits);
$sumTerms = array_map(static fn (int $digit, int $position) => $digit * (9 - $position), $digits, $digitKeys);
$sum = array_sum($sumTerms);
$modulus = $sum % 11;
if ($modulus == 0 || $modulus == 1) {
return $checkDigit == 0;
}
return $checkDigit == 11 - $modulus;
}
}