original_string: public static function is_buid($st): bool
    {
      if ( \is_string($st) && (\strlen($st) === 16) && !ctype_print($st) && !ctype_space($st) ){
        $enc = mb_detect_encoding($st, ['8bit', 'UTF-8']);
        if ( !$enc || ($enc === '8bit') ){
          return true;
        }
      }
      return false;
    }
code: public static function is_buid($st): bool
    {
      if ( \is_string($st) && (\strlen($st) === 16) && !ctype_print($st) && !ctype_space($st) ){
        $enc = mb_detect_encoding($st, ['8bit', 'UTF-8']);
        if ( !$enc || ($enc === '8bit') ){
          return true;
        }
      }
      return false;
    }
code_tokens: public static function is_buid ( $ st ) : bool { if ( \ is_string ( $ st ) && ( \ strlen ( $ st ) === 16 ) && ! ctype_print ( $ st ) && ! ctype_space ( $ st ) ) { $ enc = mb_detect_encoding ( $ st , [ '8bit' , 'UTF-8' ] ) ; if ( ! $ enc || ( $ enc === '8bit' ) ) { return true ; } } return false ; }
docstring: Checks if the string is a valid binary UID string.
  
  @param string $st
  @return boolean
docstring_tokens: Checks if the string is a valid binary UID string .