Ds\PriorityQueue::peek

(PECL ds >= 1.0.0)

Ds\PriorityQueue::peek — Returns the value at the front of the queue

public Ds\PriorityQueue::peek(): mixed

Returns the value at the front of the queue, but does not remove it.

此函数没有参数。

The value at the front of the queue.

示例 #1 Ds\PriorityQueue::peek() example

<?php
$queue = new \Ds\PriorityQueue();

$queue->push("a",  5);
$queue->push("b", 15);
$queue->push("c", 10);

var_dump($queue->peek());
?>

以上示例的输出类似于：

string(1) "b"