original_string: public static function encodeBase64($str,
          $lineLength = self::LINELENGTH,
          $lineEnd = self::LINEEND)
      {
          return rtrim(chunk_split(base64_encode($str), $lineLength, $lineEnd));
      }
code: public static function encodeBase64($str,
          $lineLength = self::LINELENGTH,
          $lineEnd = self::LINEEND)
      {
          return rtrim(chunk_split(base64_encode($str), $lineLength, $lineEnd));
      }
code_tokens: public static function encodeBase64 ( $ str , $ lineLength = self :: LINELENGTH , $ lineEnd = self :: LINEEND ) { return rtrim ( chunk_split ( base64_encode ( $ str ) , $ lineLength , $ lineEnd ) ) ; }
docstring: Encode a given string in base64 encoding and break lines
  according to the maximum linelength.
  
  @param string $str
  @param int $lineLength Defaults to {@link LINELENGTH}
  @param int $lineEnd Defaults to {@link LINEEND}
  @return string
docstring_tokens: Encode a given string in base64 encoding and break lines according to the maximum linelength .