在线文档教程
PHP
SPL

SplDoublyLinkedList::valid

SplDoublyLinkedList::valid

(PHP 5 >= 5.3.0, PHP 7)

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

Description

public bool SplDoublyLinkedList::valid ( void )

Checks if the doubly linked list contains any more nodes.

Parameters

This function has no parameters.

Return Values

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

← SplDoublyLinkedList::unshift

SplStack →

© 1997–2017 The PHP Documentation Group

Licensed under the Creative Commons Attribution License v3.0 or later.

https://secure.php.net/manual/en/spldoublylinkedlist.valid.php