dba_firstkey
(PHP 3 >= 3.0.8, PHP 4, PHP 5)
dba_firstkey -- Fetch first key
说明
string
dba_firstkey ( resource handle )
dba_firstkey() returns the first key of the database
and resets the internal key pointer. This permits a linear search through
the whole database.
返回值
Returns the key on success, or FALSE on failure.