PHP SplDoublyLinkedList add() Function
Last Updated :
23 Jun, 2023
The SplDoublyLinkedList::add() function is an inbuilt function in PHP which is used to add a new value at the given index.
Syntax:
void SplDoublyLinkedList::add( $index, $newval )
Parameters: It contains two parameters as mentioned above and described below:
- $index: It holds the index value where the new element is to be inserted.
- $newval: It holds the element which to be inserted or added.
Return Value: It does not return any value.
Below programs illustrate the SplDoublyLinkedList::add() function in PHP:
Program 1:
<?php
$list = new \SplDoublyLinkedList;
$list ->add(0, 1);
$list ->add(1, "Geeks" );
$list ->add(2, "G" );
$list ->add(3, 10);
print_r( $list );
?>
|
Output:
SplDoublyLinkedList Object
(
[flags:SplDoublyLinkedList:private] => 0
[dllist:SplDoublyLinkedList:private] => Array
(
[0] => 1
[1] => Geeks
[2] => G
[3] => 10
)
)
Program 2:
<?php
$list = new \SplDoublyLinkedList;
$list ->add(0, 30);
$list ->add(1, 20);
$list ->add(2, 30);
$list ->add(3, "Geeks" );
$list ->add(4, 'G' );
print_r( $list );
?>
|
Output:
SplDoublyLinkedList Object
(
[flags:SplDoublyLinkedList:private] => 0
[dllist:SplDoublyLinkedList:private] => Array
(
[0] => 30
[1] => 20
[2] => 30
[3] => Geeks
[4] => G
)
)
Reference: https://www.php.net/manual/en/spldoublylinkedlist.add.php
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