SplDoublyLinkedList::valid
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SplDoublyLinkedList::valid — Check whether the doubly linked list contains more nodes
说明
Checks if the doubly linked list contains any more nodes.
参数
此函数没有参数。
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SplDoublyLinkedList::valid — Check whether the doubly linked list contains more nodes
Checks if the doubly linked list contains any more nodes.
此函数没有参数。