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

(PHP 5, PHP 7) Move the iterator forward public

(PHP 5 >= 5.0.0, PHP 7) Rewind array back to the start

(PHP 5 >= 5.0.0, PHP 7) Check if offset exists

(PHP 5 >= 5.1.0, PHP 7) The current() method

(PHP 5 >= 5.1.0, PHP 7) Rewinds the Iterator

(PHP 5 >= 5.3.0, PHP 7) Moves all attached iterator instances forward

(PHP 5 >= 5.1.0, PHP 7) Return the inner iterator's children as a RecursiveCachingIterator

(PHP 5 >= 5.1.0, PHP 7) Create a RecursiveFilterIterator from a RecursiveIterator

(PHP 5 >= 5.1.0, PHP 7) Get the current key