(PHP 5 >= 5.3.0)
SplDoublyLinkedList::bottom — Peeks at the node from the beginning of the doubly linked list
此函数没有参数。
The value of the first node.
Throws RuntimeException when the data-structure is empty.
rakesh dot mishra at gmail dot com (2011-01-26 22:39:01)
<?php
/*
* Examples of DoublyLinkedList
*/
$obj = new SplDoublyLinkedList();
// Check wither linked list is empty
if ($obj->isEmpty())
{
echo "Adding nodes to Linked List<br>";
$obj->push(2);
$obj->push(3);
echo "Adding the node at beginning of doubly linked list <br>";
$obj->unshift(10);
}
echo "<br>Our Linked List:";
print_r($obj);
echo "<br>Pick the node from beginning of doubly linked list";
echo $obj->bottom();
?>