original_string: protected function createSignature($data, $secret)
      {
          return base64_encode(hash_hmac('sha512', http_build_query($data, '', '&'), base64_decode($secret), true));
      }
code: protected function createSignature($data, $secret)
      {
          return base64_encode(hash_hmac('sha512', http_build_query($data, '', '&'), base64_decode($secret), true));
      }
code_tokens: protected function createSignature ( $ data , $ secret ) { return base64_encode ( hash_hmac ( 'sha512' , http_build_query ( $ data , '' , '&' ) , base64_decode ( $ secret ) , true ) ) ; }
docstring: Create a unique signature for transmission.
  @return string
docstring_tokens: Create a unique signature for transmission .