dba_replace() replaces or
inserts the entry described with
key and value into
the database specified by
handle.
key is the key of the
entry to be inserted.
value is the value to
be inserted.
handle is a database
handle returned by dba_open().
dba_replace() returns TRUE or
FALSE, depending on whether it succeeds of fails,
respectively.
See also: dba_exists(),
dba_delete(), dba_fetch(), and
dba_insert().