69 lines
2.1 KiB
PHP
69 lines
2.1 KiB
PHP
|
<?php
|
||
|
/**
|
||
|
* This file is part of the ramsey/uuid library
|
||
|
*
|
||
|
* For the full copyright and license information, please view the LICENSE
|
||
|
* file that was distributed with this source code.
|
||
|
*
|
||
|
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
|
||
|
* @license http://opensource.org/licenses/MIT MIT
|
||
|
* @link https://benramsey.com/projects/ramsey-uuid/ Documentation
|
||
|
* @link https://packagist.org/packages/ramsey/uuid Packagist
|
||
|
* @link https://github.com/ramsey/uuid GitHub
|
||
|
*/
|
||
|
namespace Ramsey\Uuid\Codec;
|
||
|
|
||
|
use InvalidArgumentException;
|
||
|
use Ramsey\Uuid\UuidInterface;
|
||
|
|
||
|
/**
|
||
|
* OrderedTimeCodec optimizes the bytes to increment UUIDs when time goes by, to improve database INSERTs.
|
||
|
* The string value will be unchanged from StringCodec. Only works for UUID type 1.
|
||
|
*/
|
||
|
class OrderedTimeCodec extends StringCodec
|
||
|
{
|
||
|
|
||
|
/**
|
||
|
* Encodes a UuidInterface as an optimized binary representation of a UUID
|
||
|
*
|
||
|
* @param UuidInterface $uuid
|
||
|
* @return string Binary string representation of a UUID
|
||
|
*/
|
||
|
public function encodeBinary(UuidInterface $uuid)
|
||
|
{
|
||
|
$fields = $uuid->getFieldsHex();
|
||
|
|
||
|
$optimized = [
|
||
|
$fields['time_hi_and_version'],
|
||
|
$fields['time_mid'],
|
||
|
$fields['time_low'],
|
||
|
$fields['clock_seq_hi_and_reserved'],
|
||
|
$fields['clock_seq_low'],
|
||
|
$fields['node'],
|
||
|
];
|
||
|
|
||
|
return hex2bin(implode('', $optimized));
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Decodes an optimized binary representation of a UUID into a UuidInterface object instance
|
||
|
*
|
||
|
* @param string $bytes
|
||
|
* @return UuidInterface
|
||
|
* @throws \InvalidArgumentException if string has not 16 characters
|
||
|
*/
|
||
|
public function decodeBytes($bytes)
|
||
|
{
|
||
|
if (strlen($bytes) !== 16) {
|
||
|
throw new InvalidArgumentException('$bytes string should contain 16 characters.');
|
||
|
}
|
||
|
|
||
|
$hex = unpack('H*', $bytes)[1];
|
||
|
|
||
|
// Rearrange the fields to their original order
|
||
|
$hex = substr($hex, 8, 4) . substr($hex, 12, 4) . substr($hex, 4, 4) . substr($hex, 0, 4) . substr($hex, 16);
|
||
|
|
||
|
return $this->decode($hex);
|
||
|
}
|
||
|
}
|