SplQueue::setIteratorMode

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

SplQueue::setIteratorModeSets 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

Warning

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.
PHP8中文手册 站长在线 整理 版权归PHP文档组所有