MyShaarli/application/http/Base64Url.php

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<?php
namespace Shaarli\Http;
/**
* URL-safe Base64 operations
*
* @see https://en.wikipedia.org/wiki/Base64#URL_applications
*/
class Base64Url
{
/**
* Base64Url-encodes data
*
* @param string $data Data to encode
*
* @return string Base64Url-encoded data
*/
public static function encode($data)
{
return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
}
/**
* Decodes Base64Url-encoded data
*
* @param string $data Data to decode
*
* @return string Decoded data
*/
public static function decode($data)
{
return base64_decode(str_pad(strtr($data, '-_', '+/'), strlen($data) % 4, '=', STR_PAD_RIGHT));
}
}