SplQueue::setIteratorMode
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SplQueue::setIteratorMode — Sets the mode of iteration
说明
public SplQueue::setIteratorMode(int$mode): void
参数
mode
There is only one iteration parameter you can modify.
The behavior of the iterator (either one or the other):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.
返回值
没有返回值。
错误／异常
Throws a RuntimeException on trying to change the direction of iteration by using SplDoublyLinkedList::IT_MODE_LIFO.
User Contributed Notes
There are no user contributed notes for this page.官方地址：https://www.php.net/manual/en/splqueue.setiteratormode.php