The SplDoublyLinkedList::rewind() function is an inbuilt function in PHP which is used to rewind the iterator back to the start or beginning.
Syntax:
php
php
void SplDoublyLinkedList::rewind( void )Parameters: This function does not accepts any parameters. Return Value: It does not return any value. Below programs illustrate the SplDoublyLinkedList::rewind() function in PHP: Program 1:
<?php
// Declare an empty SplDoublyLinkedList
$list = new \SplDoublyLinkedList;
// Use SplDoublyLinkedList::add() function to
// add elements to the SplDoublyLinkedList
$list->add(0, 30);
$list->add(1, 20);
$list->add(2, 30);
$list->add(3, "Geeks");
$list->add(4, 'G');
// Use rewind() function
$list->rewind();
// Use SplDoublyLinkedList::current() function
// to get the current element
var_dump($list->current());
?>
Output:
Program 2:
int(30)
<?php
// Declare an empty SplDoublyLinkedList
$list = new \SplDoublyLinkedList();
// Use SplDoublyLinkedList::push() function to
// add elements to the SplDoublyLinkedList
$list->push(1);
$list->push(2);
$list->push(3);
$list->push(8);
$list->push(5);
// Use rewind() function
$list->rewind();
// Display the elements of
// doubly linked list
var_dump($list);
?>
Output:
Reference: https://www.php.net/manual/en/spldoublylinkedlist.rewind.php
object(SplDoublyLinkedList)#1 (2) {
["flags":"SplDoublyLinkedList":private]=>
int(0)
["dllist":"SplDoublyLinkedList":private]=>
array(5) {
[0]=>
int(1)
[1]=>
int(2)
[2]=>
int(3)
[3]=>
int(8)
[4]=>
int(5)
}
}