(PHP 5 >= 5.1.0, PHP 7) Begin children public

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

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

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

(PHP 5 >= 5.1.0, PHP 7) End children public

(PHP 5 >= 5.1.0, PHP 7) Has children public

(PHP 5 >= 5.1.0, PHP 7) Next element public

(PHP 5 >= 5.1.0, PHP 7) Begin Iteration public

(PHP 5, PHP 7) Check whether the current position is valid

(PHP 5 >= 5.1.0, PHP 7) Get inner iterator