init

2024-11-05 12:10:06 +08:00
commit 6b687feee2
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+<?php
+
+/*
+ * Copyright (c) Alexandre Gomes Gaigalas <alganet@gmail.com>
+ * SPDX-License-Identifier: MIT
+ */
+
+declare(strict_types=1);
+
+namespace Respect\Validation\Rules;
+
+use function bcmod;
+use function is_string;
+use function ord;
+use function preg_match;
+use function preg_replace_callback;
+use function str_replace;
+use function strlen;
+use function strval;
+use function substr;
+
+/**
+ * Validates whether the input is a valid IBAN (International Bank Account Number) or not.
+ *
+ * @author Mazen Touati <mazen_touati@hotmail.com>
+ */
+final class Iban extends AbstractRule
+{
+    private const COUNTRIES_LENGTHS = [
+        'AL' => 28,
+        'AD' => 24,
+        'AT' => 20,
+        'AZ' => 28,
+        'BH' => 22,
+        'BE' => 16,
+        'BA' => 20,
+        'BR' => 29,
+        'BG' => 22,
+        'CR' => 21,
+        'HR' => 21,
+        'CY' => 28,
+        'CZ' => 24,
+        'DK' => 18,
+        'DO' => 28,
+        'EE' => 20,
+        'FO' => 18,
+        'FI' => 18,
+        'FR' => 27,
+        'GE' => 22,
+        'DE' => 22,
+        'GI' => 23,
+        'GR' => 27,
+        'GL' => 18,
+        'GT' => 28,
+        'HU' => 28,
+        'IS' => 26,
+        'IE' => 22,
+        'IL' => 23,
+        'IT' => 27,
+        'JO' => 30,
+        'KZ' => 20,
+        'KW' => 30,
+        'LV' => 21,
+        'LB' => 28,
+        'LI' => 21,
+        'LT' => 20,
+        'LU' => 20,
+        'MK' => 19,
+        'MT' => 31,
+        'MR' => 27,
+        'MU' => 30,
+        'MD' => 24,
+        'MC' => 27,
+        'ME' => 22,
+        'NL' => 18,
+        'NO' => 15,
+        'PK' => 24,
+        'PL' => 28,
+        'PS' => 29,
+        'PT' => 25,
+        'QA' => 29,
+        'XK' => 20,
+        'RO' => 24,
+        'LC' => 32,
+        'SM' => 27,
+        'ST' => 25,
+        'SA' => 24,
+        'RS' => 22,
+        'SC' => 31,
+        'SK' => 24,
+        'SI' => 19,
+        'ES' => 24,
+        'SE' => 24,
+        'CH' => 21,
+        'TL' => 23,
+        'TN' => 24,
+        'TR' => 26,
+        'UA' => 29,
+        'AE' => 23,
+        'GB' => 22,
+        'VG' => 24,
+    ];
+
+    /**
+     * {@inheritDoc}
+     */
+    public function validate($input): bool
+    {
+        if (!is_string($input)) {
+            return false;
+        }
+
+        $iban = str_replace(' ', '', $input);
+        if (!preg_match('/[A-Z0-9]{15,34}/', $iban)) {
+            return false;
+        }
+
+        $countryCode = substr($iban, 0, 2);
+        if (!$this->hasValidCountryLength($iban, $countryCode)) {
+            return false;
+        }
+
+        $checkDigits = substr($iban, 2, 2);
+        $bban = substr($iban, 4);
+        $rearranged = $bban . $countryCode . $checkDigits;
+
+        return bcmod($this->convertToIntegerAsString($rearranged), '97') === '1';
+    }
+
+    private function hasValidCountryLength(string $iban, string $countryCode): bool
+    {
+        if (!isset(self::COUNTRIES_LENGTHS[$countryCode])) {
+            return false;
+        }
+
+        return strlen($iban) === self::COUNTRIES_LENGTHS[$countryCode];
+    }
+
+    private function convertToIntegerAsString(string $reArrangedIban): string
+    {
+        return (string) preg_replace_callback(
+            '/[A-Z]/',
+            static function (array $match): string {
+                return strval(ord($match[0]) - 55);
+            },
+            $reArrangedIban
+        );
+    }
+}