(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 0x0 : SplDoublyLnkedList::IT_MODE_FIFO | SplDoublyLnkedList::IT_MODE_KEEP
The direction of iteration can no longer be changer for SplQueues. Trying to do so will result in a RuntimeException being thrown.
Эта функция не возвращает значения после выполнения.