Php/docs/spldoublylinkedlist.key

• PHP Manual
• SplDoublyLinkedList
• Return current node index

SplDoublyLinkedList::key

(PHP 5 >= 5.3.0, PHP 7)

SplDoublyLinkedList::key — Return current node index

说明

public SplDoublyLinkedList::key ( ) : mixed

This function returns the current node index

参数

此函数没有参数。

返回值

The current node index.