<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Uid;

/**
 * @author Grégoire Pineau <lyrixx@lyrixx.info>
 *
 * @see https://tools.ietf.org/html/rfc4122#appendix-C for details about namespaces
 */
class Uuid extends AbstractUid
{
    public const NAMESPACE_DNS = '6ba7b810-9dad-11d1-80b4-00c04fd430c8';
    public const NAMESPACE_URL = '6ba7b811-9dad-11d1-80b4-00c04fd430c8';
    public const NAMESPACE_OID = '6ba7b812-9dad-11d1-80b4-00c04fd430c8';
    public const NAMESPACE_X500 = '6ba7b814-9dad-11d1-80b4-00c04fd430c8';

    protected const TYPE = 0;
    protected const NIL = '00000000-0000-0000-0000-000000000000';

    public function __construct(string $uuid, bool $checkVariant = false)
    {
        $type = preg_match('{^[0-9a-f]{8}(?:-[0-9a-f]{4}){3}-[0-9a-f]{12}$}Di', $uuid) ? (int) $uuid[14] : false;

        if (false === $type || (static::TYPE ?: $type) !== $type) {
            throw new \InvalidArgumentException(sprintf('Invalid UUID%s: "%s".', static::TYPE ? 'v'.static::TYPE : '', $uuid));
        }

        $this->uid = strtolower($uuid);

        if ($checkVariant && !\in_array($this->uid[19], ['8', '9', 'a', 'b'], true)) {
            throw new \InvalidArgumentException(sprintf('Invalid UUID%s: "%s".', static::TYPE ? 'v'.static::TYPE : '', $uuid));
        }
    }

    public static function fromString(string $uuid): static
    {
        if (22 === \strlen($uuid) && 22 === strspn($uuid, BinaryUtil::BASE58[''])) {
            $uuid = str_pad(BinaryUtil::fromBase($uuid, BinaryUtil::BASE58), 16, "\0", \STR_PAD_LEFT);
        }

        if (16 === \strlen($uuid)) {
            // don't use uuid_unparse(), it's slower
            $uuid = bin2hex($uuid);
            $uuid = substr_replace($uuid, '-', 8, 0);
            $uuid = substr_replace($uuid, '-', 13, 0);
            $uuid = substr_replace($uuid, '-', 18, 0);
            $uuid = substr_replace($uuid, '-', 23, 0);
        } elseif (26 === \strlen($uuid) && Ulid::isValid($uuid)) {
            $ulid = new NilUlid();
            $ulid->uid = strtoupper($uuid);
            $uuid = $ulid->toRfc4122();
        }

        if (__CLASS__ !== static::class || 36 !== \strlen($uuid)) {
            return new static($uuid);
        }

        if (self::NIL === $uuid) {
            return new NilUuid();
        }

        if (\in_array($uuid[19], ['8', '9', 'a', 'b', 'A', 'B'], true)) {
            switch ($uuid[14]) {
                case UuidV1::TYPE: return new UuidV1($uuid);
                case UuidV3::TYPE: return new UuidV3($uuid);
                case UuidV4::TYPE: return new UuidV4($uuid);
                case UuidV5::TYPE: return new UuidV5($uuid);
                case UuidV6::TYPE: return new UuidV6($uuid);
            }
        }

        return new self($uuid);
    }

    final public static function v1(): UuidV1
    {
        return new UuidV1();
    }

    final public static function v3(self $namespace, string $name): UuidV3
    {
        // don't use uuid_generate_md5(), some versions are buggy
        $uuid = md5(hex2bin(str_replace('-', '', $namespace->uid)).$name, true);

        return new UuidV3(self::format($uuid, '-3'));
    }

    final public static function v4(): UuidV4
    {
        return new UuidV4();
    }

    final public static function v5(self $namespace, string $name): UuidV5
    {
        // don't use uuid_generate_sha1(), some versions are buggy
        $uuid = substr(sha1(hex2bin(str_replace('-', '', $namespace->uid)).$name, true), 0, 16);

        return new UuidV5(self::format($uuid, '-5'));
    }

    final public static function v6(): UuidV6
    {
        return new UuidV6();
    }

    public static function isValid(string $uuid): bool
    {
        if (self::NIL === $uuid && \in_array(static::class, [__CLASS__, NilUuid::class], true)) {
            return true;
        }

        if (__CLASS__ === static::class && 'ffffffff-ffff-ffff-ffff-ffffffffffff' === strtr($uuid, 'F', 'f')) {
            return true;
        }

        if (!preg_match('{^[0-9a-f]{8}(?:-[0-9a-f]{4}){2}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$}Di', $uuid)) {
            return false;
        }

        return __CLASS__ === static::class || static::TYPE === (int) $uuid[14];
    }

    public function toBinary(): string
    {
        return uuid_parse($this->uid);
    }

    public function toRfc4122(): string
    {
        return $this->uid;
    }

    public function compare(AbstractUid $other): int
    {
        if (false !== $cmp = uuid_compare($this->uid, $other->uid)) {
            return $cmp;
        }

        return parent::compare($other);
    }

    private static function format(string $uuid, string $version): string
    {
        $uuid[8] = $uuid[8] & "\x3F" | "\x80";
        $uuid = substr_replace(bin2hex($uuid), '-', 8, 0);
        $uuid = substr_replace($uuid, $version, 13, 1);
        $uuid = substr_replace($uuid, '-', 18, 0);

        return substr_replace($uuid, '-', 23, 0);
    }
}

• [D] Command
• [D] Factory
• [F] AbstractUid.php
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• [F] BinaryUtil.php
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• [F] CHANGELOG.md
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• [F] composer.json
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• [F] LICENSE
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• [F] NilUlid.php
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• [F] NilUuid.php
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• [F] README.md
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• [F] Ulid.php
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• [F] Uuid.php
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• [F] UuidV1.php
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• [F] UuidV3.php
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• [F] UuidV4.php
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• [F] UuidV5.php
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• [F] UuidV6.php
  Delete

About Section

About NFC Pay: Our Story and Mission

NFC Pay was founded with a vision to transform the way people handle transactions. Our journey is defined by a commitment to innovation, security, and convenience. We strive to deliver seamless, user-friendly payment solutions that make everyday transactions effortless and secure. Our mission is to empower you to pay with ease and confidence, anytime, anywhere.

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FAQ Section

Frequently Asked Questions About NFC Pay

Here are answers to some common questions about NFC Pay. We aim to provide clear and concise information to help you understand how our platform works and how it can benefit you. If you have any further inquiries, please don’t hesitate to contact our support team.

How do I register for NFC Pay?

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Is my payment information secure?

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How do I transfer money to another user?

Go to the transfer section, select the recipient, enter the amount, and authorize the transfer.

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