SplPriorityQueue::valid

(PHP 5 >= 5.3.0, PHP 7)

SplPriorityQueue::valid — Check whether the queue contains more nodes

说明

public bool SplPriorityQueue::valid ( void )

Checks if the queue contains any more nodes.

参数

此函数没有参数。

返回值

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

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