— Function File: rval = base64decode(code)
— Function File: rval = base64decode(code,as_string)

convert a base64 code (a string of printable characters according to RFC 2045) into the original ASCII data set of range 0-255. If option as_string is passed, the return value is converted into a string.

          base64decode(base64encode('Hakuna Matata'),true)
          base64decode('SGFrdW5hIE1hdGF0YQ==',true)
          returns 'Hakuna Matata'