The SplDoublyLinkedList::rewind() function is an inbuilt function in PHP which is used to rewind the iterator back to the start or beginning.
Syntax:
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:
int(30)
Program 2:
<?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:
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)
}
}
Reference: https://www.php.net/manual/en/spldoublylinkedlist.rewind.php
