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    The SplStack class

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

    Вступ

    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.

    Короткий огляд класу

    class SplStack extends SplDoublyLinkedList {
    /* Успадковані константи */
    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;
    /* Успадковані методи */
    public SplDoublyLinkedList::add(int $index, mixed $value): void
    public SplDoublyLinkedList::bottom(): mixed
    public SplDoublyLinkedList::count(): int
    public SplDoublyLinkedList::current(): mixed
    public SplDoublyLinkedList::getIteratorMode(): int
    public SplDoublyLinkedList::isEmpty(): bool
    public SplDoublyLinkedList::key(): int
    public SplDoublyLinkedList::next(): void
    public SplDoublyLinkedList::offsetExists(int $index): bool
    public SplDoublyLinkedList::offsetGet(int $index): mixed
    public SplDoublyLinkedList::offsetSet(?int $index, mixed $value): void
    public SplDoublyLinkedList::offsetUnset(int $index): void
    public SplDoublyLinkedList::pop(): mixed
    public SplDoublyLinkedList::prev(): void
    public SplDoublyLinkedList::push(mixed $value): void
    public SplDoublyLinkedList::rewind(): void
    public SplDoublyLinkedList::serialize(): string
    public SplDoublyLinkedList::setIteratorMode(int $mode): int
    public SplDoublyLinkedList::shift(): mixed
    public SplDoublyLinkedList::top(): mixed
    public SplDoublyLinkedList::unserialize(string $data): void
    public SplDoublyLinkedList::unshift(mixed $value): void
    public SplDoublyLinkedList::valid(): bool
    }

    Приклади

    Приклад #1 SplStack example

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

    Поданий вище приклад виведе:

    3
2
1

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    User Contributed Notes 2 notes

    up
    41
    lsroudi at gmail dot com
    10 years ago
    the SplStack is simply a SplDoublyLinkedList with an iteration mode IT_MODE_LIFO and IT_MODE_KEEP
    up
    8
    lincoln dot du dot j at gmail dot com
    7 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
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