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    Ds\PriorityQueue::pop

    (PECL ds >= 1.0.0)

    Ds\PriorityQueue::pop — Removes 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"
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