Ds\Stack::pop

(PECL ds >= 1.0.0)

Ds\Stack::pop — Removes and returns the value at the top of the stack.

说明

public mixed Ds\Stack::pop ( void )

Removes and returns the value at the top of the stack.

参数

此函数没有参数。

返回值

The removed value which was at the top of the stack.

错误／异常

UnderflowException if empty.

范例

Example #1 Ds\Stack::pop() example


<?php
$stack = new \Ds\Stack();

$stack->push("a");
$stack->push("b");
$stack->push("c");

var_dump($stack->pop());
var_dump($stack->pop());
var_dump($stack->pop());
?>

以上例程的输出类似于：

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