The SplDoublyLinkedList::offsetSet() function is an inbuilt function in PHP which is used to set the value at given index.
Syntax:
void SplDoublyLinkedList::offsetSet( $index, $newval )
Parameters: This function accepts two parameters as mentioned above and described below:
- $index: It holds the index where value to be set.
- $newval: It holds the value which to be set at given index.
Return Value: It does not return any value.
Below programs illustrate the SplDoublyLinkedList::offsetSet() 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::offsetSet() function // to set the value at given index $list->offsetSet(1, "neveropen");   $list->offsetSet(2, "Welcome");   var_dump($list);   ?> |
Output:
object(SplDoublyLinkedList)#1 (2) {
["flags":"SplDoublyLinkedList":private]=>
int(0)
["dllist":"SplDoublyLinkedList":private]=>
array(5) {
[0]=>
int(30)
[1]=>
string(13) "neveropen"
[2]=>
string(7) "Welcome"
[3]=>
string(5) "Geeks"
[4]=>
string(1) "G"
}
}
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 SplDoublyLinkedList::offsetSet() function // to set the value at given index $list->offsetSet(1, "Welcome");   $list->offsetSet(2, "to");   $list->offsetSet(3, "neveropen");   print_r($list);   ?> |
Output:
SplDoublyLinkedList Object
(
[flags:SplDoublyLinkedList:private] => 0
[dllist:SplDoublyLinkedList:private] => Array
(
[0] => 1
[1] => Welcome
[2] => to
[3] => neveropen
[4] => 5
)
)
Reference: https://www.php.net/manual/en/spldoublylinkedlist.offsetset.php
