« SplDoublyLinkedList::valid

SplStack クラス

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

はじめに

SplStack クラスは、スタックの主要な機能を提供します。双方向リンクリストのイテレータのモードを SplDoublyLinkedList::IT_MODE_LIFO に設定することで実装しています。

クラス概要

classSplStackextendsSplDoublyLinkedList {

publicconstintSplDoublyLinkedList::IT_MODE_LIFO;

publicconstintSplDoublyLinkedList::IT_MODE_FIFO;

publicconstintSplDoublyLinkedList::IT_MODE_DELETE;

publicconstintSplDoublyLinkedList::IT_MODE_KEEP;

publicSplDoublyLinkedList::add(int$index, mixed$value): void

publicSplDoublyLinkedList::bottom(): mixed

publicSplDoublyLinkedList::count(): int

publicSplDoublyLinkedList::current(): mixed

publicSplDoublyLinkedList::getIteratorMode(): int

publicSplDoublyLinkedList::isEmpty(): bool

publicSplDoublyLinkedList::key(): int

publicSplDoublyLinkedList::next(): void

publicSplDoublyLinkedList::offsetExists(int$index): bool

publicSplDoublyLinkedList::offsetGet(int$index): mixed

publicSplDoublyLinkedList::offsetSet(?int$index, mixed$value): void

publicSplDoublyLinkedList::offsetUnset(int$index): void

publicSplDoublyLinkedList::pop(): mixed

publicSplDoublyLinkedList::prev(): void

publicSplDoublyLinkedList::push(mixed$value): void

publicSplDoublyLinkedList::rewind(): void

publicSplDoublyLinkedList::serialize(): string

publicSplDoublyLinkedList::setIteratorMode(int$mode): int

publicSplDoublyLinkedList::shift(): mixed

publicSplDoublyLinkedList::top(): mixed

publicSplDoublyLinkedList::unserialize(string$data): void

publicSplDoublyLinkedList::unshift(mixed$value): void

publicSplDoublyLinkedList::valid(): bool

}

例

例1 SplStack の例

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

上の例の出力は以下となります。

 3 2 1