- var_dump: documentation ( source)
- unserialize: documentation ( source)
<?php
$list = new SplDoublyLinkedList;
$list->push("foo");
$list->push("bar");
$ser = $list->serialize();
var_dump($ser);
var_dump(unserialize($ser));
$list->next();
$ser = $list->serialize();
var_dump($ser);
var_dump(unserialize($ser));