(PECL ds >= 1.0.0)
Ds\PriorityQueue::pop — Removes and returns the value with the highest priority
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).
此函数没有参数。
The removed value which was at the front of the queue.
UnderflowException if empty.
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"