The SplStack class

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

    Introduction

    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.

    Examples

    Example #1 SplStack example

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

    The above example will output:

     3 2 1
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