The SplStack class

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

Einführung

The SplStack class provides the main functionalities of a stack implemented using a doubly linked list by setting the iterator mode to SplDoublyLinkedList::IT_MODE_LIFO.

Klassenbeschreibung

class SplStack extends SplDoublyLinkedList {
/* Geerbte Konstanten */
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;
/* Geerbte Methoden */
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
}

Beispiele

Beispiel #1 SplStack example

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

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

3
2
1