(PHP 5 >= 5.3.0, PHP 7)
SplQueue::setIteratorMode — Sets the mode of iteration
SplQueue::setIteratorMode ( int $mode ) : void
mode
There is only one iteration parameter you can modify.
SplDoublyLinkedList::IT_MODE_DELETE
(Elements are deleted by the iterator)SplDoublyLinkedList::IT_MODE_KEEP
(Elements are traversed by the iterator) 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
.
No value is returned.
Throws a RuntimeException on trying to change the direction of iteration by using SplDoublyLinkedList::IT_MODE_LIFO
.
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https://www.php.net/manual/en/splqueue.setiteratormode.php