文字
SplDoublyLinkedList::shift
(PHP 5 >= 5.3.0)
SplDoublyLinkedList::shift — Shifts a node from the beginning of the doubly linked list
说明
public mixed SplDoublyLinkedList::shift
( void
)
参数
此函数没有参数。
返回值
The value of the shifted node.
错误／异常
Throws RuntimeException when the data-structure is empty.