SplDoublyLinkedList::valid

(PHP 5 >= 5.3.0, PHP 7)

SplDoublyLinkedList::valid — Check whether the doubly linked list contains more nodes

说明

public SplDoublyLinkedList::valid ( void ) : bool

Checks if the doubly linked list contains any more nodes.

参数

此函数没有参数。

返回值

Returns TRUE if the doubly linked list contains any more nodes, FALSE otherwise.