Ds\Queue::pop
(PECL ds >= 1.0.0)
Ds\Queue::pop — Removes and returns the value at the front of the queue
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\Queue::pop() example
<?php
$queue = new \Ds\Queue();
$queue->push("a");
$queue->push("b");
$queue->push("c");
var_dump($queue->pop());
var_dump($queue->pop());
var_dump($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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