SplStack 类

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

简介

SplStack 类的主要功能是通过将迭代模式设置为 SplDoublyLinkedList::IT_MODE_LIFO 来提供使用双向链表实现的栈。

类摘要

class SplStack extends SplDoublyLinkedList {
/* 继承的常量 */
public const int SplDoublyLinkedList::IT_MODE_LIFO;
public const int SplDoublyLinkedList::IT_MODE_FIFO;
public const int SplDoublyLinkedList::IT_MODE_DELETE;
public const int SplDoublyLinkedList::IT_MODE_KEEP;
/* 继承的方法 */
public function SplDoublyLinkedList::add(int $index, mixed $value): void
public function SplDoublyLinkedList::bottom(): mixed
public function SplDoublyLinkedList::count(): int
public function SplDoublyLinkedList::current(): mixed
public function SplDoublyLinkedList::getIteratorMode(): int
public function SplDoublyLinkedList::isEmpty(): bool
public function SplDoublyLinkedList::key(): int
public function SplDoublyLinkedList::next(): void
public function SplDoublyLinkedList::offsetExists(int $index): bool
public function SplDoublyLinkedList::offsetGet(int $index): mixed
public function SplDoublyLinkedList::offsetSet(?int $index, mixed $value): void
public function SplDoublyLinkedList::offsetUnset(int $index): void
public function SplDoublyLinkedList::pop(): mixed
public function SplDoublyLinkedList::prev(): void
public function SplDoublyLinkedList::push(mixed $value): void
public function SplDoublyLinkedList::rewind(): void
public function SplDoublyLinkedList::serialize(): string
public function SplDoublyLinkedList::setIteratorMode(int $mode): int
public function SplDoublyLinkedList::shift(): mixed
public function SplDoublyLinkedList::top(): mixed
public function SplDoublyLinkedList::unserialize(string $data): void
public function SplDoublyLinkedList::unshift(mixed $value): void
public function SplDoublyLinkedList::valid(): bool
}

示例

示例 #1 SplStack 示例

<?php
$q = new SplStack();
$q[] = 1;
$q[] = 2;
$q[] = 3;
foreach ($q as $elem) {
echo $elem."\n";
}
?>

以上示例会输出：

3
2
1