SplDoublyLinkedList::bottom

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

SplDoublyLinkedList::bottom — Peeks at the node from the beginning of the doubly linked list

说明

public SplDoublyLinkedList::bottom ( ) : mixed

参数

此函数没有参数。

返回值

The value of the first node.

错误／异常

Throws RuntimeException when the data-structure is empty.