SplQueue »

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

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+添加备注

用户贡献的备注 2 notes

down

lsroudi at gmail dot com ¶

12 years ago

the SplStack is simply a SplDoublyLinkedList with an iteration mode IT_MODE_LIFO and IT_MODE_KEEP

down

lincoln dot du dot j at gmail dot com ¶

8 years ago

<?php
//SplStack Mode is LIFO (Last In First Out)
 
$q = new SplStack();
$q[] = 1;
$q[] = 2;
$q[] = 3;
$q->push(4);
$q->add(4,5);
$q->rewind();
while($q->valid()){
 echo $q->current(),"\n";
 $q->next();
}
?>

Output
5
4
3
2
1