(PHP 4 <= 4.3.0, PECL dbplus >= 0.9)
dbplus_ropen — Open relation file local
$name
   ) : resource
   dbplus_ropen() will open the relation
   file locally for quick access without any
   client/server overhead. Access is read only and only
   dbplus_curr() and
   dbplus_next() may be applied to the returned
   relation.
  
name
此函数是实验性的。此函数的表象,包括名称及其相关文档都可能在未来的 PHP 发布版本中未通知就被修改。使用本函数风险自担。