(PHP 4, PHP 5, PHP 7)
dba_firstkey — Fetch first key
dba_firstkey ( resource $handle ) : string|false
dba_firstkey() returns the first key of the database and resets the internal key pointer. This permits a linear search through the whole database.
handle
The database handler, returned by dba_open() or dba_popen().
Returns the key on success or false
on failure.
© 1997–2020 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.dba-firstkey.php