(PHP 4 <= 4.1.0, PECL dbplus >= 0.9)
dbplus_rkeys — Specify new primary key for a relation
dbplus_rkeys() will replace the current
primary key for relation with the
combination of domains specified by domlist.
relationA relation opened by dbplus_open().
domlistA combination of domains. May be passed as a single domain name string or as an array of domain names.
Returns resource on success or DBPLUS_ERR_UNKNOWN on
failure.
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 。