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   1  <?php
   2  /**
   3   * This file is part of Lcobucci\JWT, a simple library to handle JWT and JWS
   4   *
   5   * @license http://opensource.org/licenses/BSD-3-Clause BSD-3-Clause
   6   */
   7  
   8  namespace Lcobucci\JWT\Parsing;
   9  
  10  use JsonException;
  11  use Lcobucci\JWT\Encoding\CannotEncodeContent;
  12  use RuntimeException;
  13  
  14  use function json_encode;
  15  use function json_last_error;
  16  use function json_last_error_msg;
  17  
  18  /**
  19   * Class that encodes data according with the specs of RFC-4648
  20   *
  21   * @author Luís Otávio Cobucci Oblonczyk <[email protected]>
  22   * @since 0.1.0
  23   *
  24   * @link http://tools.ietf.org/html/rfc4648#section-5
  25   */
  26  class Encoder
  27  {
  28      /**
  29       * Encodes to JSON, validating the errors
  30       *
  31       * @param mixed $data
  32       * @return string
  33       *
  34       * @throws RuntimeException When something goes wrong while encoding
  35       */
  36      public function jsonEncode($data)
  37      {
  38          if (PHP_VERSION_ID < 70300) {
  39              $json = json_encode($data);
  40  
  41              if (json_last_error() != JSON_ERROR_NONE) {
  42                  throw CannotEncodeContent::jsonIssues(new JsonException(json_last_error_msg()));
  43              }
  44  
  45              return $json;
  46          }
  47  
  48          try {
  49              return json_encode($data, JSON_THROW_ON_ERROR);
  50          } catch (JsonException $exception) {
  51              throw CannotEncodeContent::jsonIssues($exception);
  52          }
  53      }
  54  
  55      /**
  56       * Encodes to base64url
  57       *
  58       * @param string $data
  59       * @return string
  60       */
  61      public function base64UrlEncode($data)
  62      {
  63          return str_replace('=', '', strtr(base64_encode($data), '+/', '-_'));
  64      }
  65  }