The SplDoublyLinkedList::next() function is an inbuilt function in PHP which is used to move the index into next index.
Syntax:
void SplDoublyLinkedList::next( void )
Parameters: This function does not accept any parameter.
Return Value: It does not return any value.
Below programs illustrate the SplDoublyLinkedList::next() 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'); $list->rewind(); // Use SplDoublyLinkedList::current() function // to get the current element var_dump($list->current()); // Use next() function to increment // the index value $list->next(); // Use SplDoublyLinkedList::current() function // to get the current element var_dump($list->current()); ?> |
Output:
int(30) int(20)
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); $list->rewind(); // Use SplDoublyLinkedList::current() function // to get the current element var_dump($list->current()); // Use next() function to increment // the index value $list->next(); $list->next(); $list->next(); // Use SplDoublyLinkedList::current() function // to get the current element var_dump($list->current()); ?> |
Output:
int(1) int(8)
Reference: https://www.php.net/manual/en/spldoublylinkedlist.next.php
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