SplDoublyLinkedList::current

(PHP 5 >= 5.3.0, PHP 7)

SplDoublyLinkedList::current — Return current array entry

说明

public SplDoublyLinkedList::current ( void ) : mixed

Get the current doubly linked list node.

参数

此函数没有参数。

返回值

The current node value.

User Contributed Notes

rakesh dot mishra at gmail dot com 26-Jan-2011 11:18


<?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);



$curr = $obj->current(); // this will return NULL as we have not set initial node.



echo "<br> Rewinding the position so that current node points to first node ";

$obj->rewind(); 



echo "<br>Current node of the linked list:";

echo  $obj->current(); // this will print first node of the linked list.



echo "<br>Moving to Next node:";

$obj->next();



echo "<br>Printing the next node:";

echo $obj->current();



?>