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

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

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

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

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

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

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

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

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

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