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  • SplDoublyLinkedList::__construct()

    (PHP 5 >= 5.3.0, PHP 7)

    Constructs a new doubly linked list

    说明

    publicSplDoublyLinkedList::__construct(void)

    This constructs a new empty doubly linked list.

    参数

    此函数没有参数。

    返回值

    没有返回值。

    范例

    Example #1SplDoublyLinkedList::__construct()example

    <?php
    $dll = new SplDoublyLinkedList();
    $dll->push(2);
    $dll->push(3);
    $dll->unshift(5);
    var_dump($dll);
    ?>
    

    以上例程会输出:

    object(SplDoublyLinkedList)#1 (2) {
      ["flags":"SplDoublyLinkedList":private]=>
      int(0)
      ["dllist":"SplDoublyLinkedList":private]=>
      array(3) {
        [0]=>
        int(5)
        [1]=>
        int(2)
        [2]=>
        int(3)
      }
    }