application/Base64Url.php

   1 <?php
   2
   3 namespace Shaarli;
   4
   5 /**
   6  * URL-safe Base64 operations
   7  *
   8  * @see https://en.wikipedia.org/wiki/Base64#URL_applications
   9  */
  10 class Base64Url
  11 {
  12     /**
  13      * Base64Url-encodes data
  14      *
  15      * @param string $data Data to encode
  16      *
  17      * @return string Base64Url-encoded data
  18      */
  19     public static function encode($data)
  20     {
  21         return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
  22     }
  23
  24     /**
  25      * Decodes Base64Url-encoded data
  26      *
  27      * @param string $data Data to decode
  28      *
  29      * @return string Decoded data
  30      */
  31     public static function decode($data)
  32     {
  33         return base64_decode(str_pad(strtr($data, '-_', '+/'), strlen($data) % 4, '=', STR_PAD_RIGHT));
  34     }
  35 }