(PHP 4, PHP 5, PHP 7, PHP 8)
dba_nextkey — Fetch next key
$dba
dba_nextkey() returns the next key of the database and advances the internal key pointer.
dba
The database handler, returned by dba_open() or dba_popen().
Returns the key on success 或者在失敗時(shí)返回 false.
false