(PHP 5 >= 5.3.0, PHP 7) Rewinds all attached iterator instances
(PHP 5 >= 5.3.0, PHP 7) Gets the registered iterator instances
(PHP 5 >= 5.3.0, PHP 7) Constructs a new MultipleIterator
(PHP 5 >= 5.3.0, PHP 7) Detaches an iterator
(PHP 5 >= 5.3.0, PHP 7) Gets the number of attached iterator instances
(PHP 5 >= 5.3.0, PHP 7) Sets flags public
(PHP 5 >= 5.3.0, PHP 7) Attaches iterator information
(PHP 5 >= 5.3.0, PHP 7) Checks the validity of sub iterators
(PHP 5 >= 5.3.0, PHP 7) Gets the flag information
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