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

(PHP 5 >= 5.3.0, PHP 7) Peeks at the node from the end of the doubly linked list

(PHP 5 >= 5.1.0, PHP 7) Not at EOF public

(PHP 5 >= 5.4.0, PHP 7) Calculate a unique identifier for the contained objects

(PHP 5 >= 5.3.0, PHP 7) Sets the mode of iteration

(PHP 5, PHP 7) Get the current depth of the recursive iteration

(PHP 5 >= 5.4.0, PHP 7) Return the traits used by the given class

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

(PHP 5 >= 5.0.0, PHP 7) Appends the value

(PHP 5 >= 5.5.11, PHP 7) Read from file public