dbplus_rkeys() will replace the current
primary key for relation with the
combination of domains specified by domlist.
A relation opened by dbplus_open().
A combination of domains. May be passed as a single domain name
string or as an array of domain names.
Returns resource on success or
This function is
EXPERIMENTAL. The behaviour of this function, the
name of this function, and anything else documented about this
function may change without notice in a future release of PHP.
Use this function at your own risk.