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