SplQueue::setIteratorMode()

(PHP 5 >= 5.3.0, PHP 7)

Sets the mode of iteration

说明

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.