(PHP 3>= 3.0.8, PHP 4 >= 4.0.0)
dba_nextkey -- Fetch next keydba_nextkey() returns the next key of the database specified by handle and advances the internal key pointer.
handle is a database handle returned by dba_open().
dba_nextkey() returns the key or FALSE depending on whether it succeeds or fails, respectively.
See also: dba_firstkey() and example 2 in the DBA overview