PHP 7.1.21 Released

Ds\PriorityQueue::pop

(PECL ds >= 1.0.0)

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

说明

public mixed Ds\PriorityQueue::pop ( void )

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

Note:

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.

范例

Example #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());
?>

以上例程的输出类似于:

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