Ds\PriorityQueue::pop

(PECL ds >= 1.0.0)

Ds\PriorityQueue::popRemoves and returns the value with the highest priority

说明

public Ds\PriorityQueue::pop(): mixed

Removes and returns the value at the front of the queue, ie. the value with the highest priority.

注意:

Values with equal priority fall back to FIFO (first in first out).

参数

此函数没有参数。

返回值

The removed value which was at the front of the queue.

错误/异常

UnderflowException if empty.

示例

示例 #1 Ds\PriorityQueue::pop() example

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

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

print_r($queue->pop());
print_r($queue->pop());
print_r($queue->pop());
?>

以上示例的输出类似于:

string(1) "a"
string(1) "b"
string(1) "c"