(PHP 5 >= 5.3.0)
SplQueue::setIteratorMode — Sets the mode of iteration
There is only one iteration parameter you can modify.
The default mode is: SplDoublyLinkedList::IT_MODE_FIFO | SplDoublyLinkedList::IT_MODE_KEEP
The direction of iteration can not be changed for SplQueues, it is always SplDoublyLinkedList::IT_MODE_FIFO.
값을 반환하지 않습니다.
Throws a RuntimeException on trying to change the direction of iteration by using SplDoublyLinkedList::IT_MODE_LIFO.