PHP - Manual: SplDoublyLinkedList::top
2025-02-27
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SplDoublyLinkedList::top — Peeks at the node from the end of the doubly linked list
此函数没有参数。
The value of the last node.
Throws RuntimeException when the data-structure is empty.
官方地址:https://www.php.net/manual/en/spldoublylinkedlist.top.php