SplPriorityQueue
PHP Manual

SplPriorityQueue::top

(PHP 5 >= 5.3.0, PHP 7)

SplPriorityQueue::topPeeks at the node from the top of the queue

说明

public mixed SplPriorityQueue::top ( void )

参数

此函数没有参数。

返回值

The value or priority (or both) of the top node, depending on the extract flag.


SplPriorityQueue
PHP Manual