dba_firstkey
    (PHP 3 >= 3.0.8, PHP 4, PHP 5)
dba_firstkey -- Fetch first key
Description
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.
  
Return Values
   Returns the key on success, or FALSE on failure.