(PHP 5 >= 5.1.2, PHP 7) Gets the file group

(PHP 5 >= 5.1.2, PHP 7) Register given function as __autoload() implementation

(PHP 5 >= 5.2.0, PHP 7) Sort the entries with a user-defined comparison function and maintain key association

(PHP 5 >= 5.3.0, PHP 7) Move to next entry

(PHP 5 >= 5.3.0, PHP 7) Return current node index

(PHP 5 >= 5.4.0, PHP 7) Unserializes the storage

(PHP 5, PHP 7) The current active sub iterator

(PHP 5 >= 5.3.0, PHP 7) Unserialize public

(PHP 5, PHP 7) Rewind the iterator to the first element of the top level inner iterator

(PHP 5 >= 5.1.2, PHP 7) Construct a new temporary file object