PHPTS：一键免费搭建 Nginx + PHP + MySQL 运行环境

SplHeap::valid

(PHP 5 >= 5.3.0, PHP 7)

SplHeap::valid — Check whether the heap contains more nodes

说明

public SplHeap::valid ( void ) : bool

Checks if the heap contains any more nodes.

参数

此函数没有参数。

返回值

Returns TRUE if the heap contains any more nodes, FALSE otherwise.