40 lines
1.0 KiB
PHP
40 lines
1.0 KiB
PHP
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<?php
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declare(strict_types=1);
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/**
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* This file is part of Hyperf.
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*
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* @link https://www.hyperf.io
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* @document https://hyperf.wiki
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* @contact group@hyperf.io
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* @license https://github.com/hyperf/hyperf/blob/master/LICENSE
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*/
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namespace Hyperf\Utils\Codec;
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class Base62
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{
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public const CHARS = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
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public const BASE = 62;
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public static function encode(int $number): string
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{
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$chars = [];
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while ($number > 0) {
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$remain = $number % self::BASE;
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$chars[] = self::CHARS[$remain];
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$number = ($number - $remain) / self::BASE;
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}
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return implode('', array_reverse($chars));
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}
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public static function decode(string $data): int
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{
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return array_reduce(array_map(function ($character) {
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return strpos(self::CHARS, $character);
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}, str_split($data)), function ($result, $remain) {
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return $result * self::BASE + $remain;
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});
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}
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}
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