The SplDoublyLinkedList::pop() function is an inbuilt function in PHP which is used to pop the node from the end of the doubly linked list.
Syntax:
mixed SplDoublyLinkedList::pop( void )
Parameters: This function does not accept any parameters.
Return Value: This function returns the value of a popped node in the doubly linked list. The below programs illustrate the SplDoublyLinkedList::pop() 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");
$list->add(4, 'G');
// Use SplDoublyLinkedList::pop() function
// to remove elements from doubly linked list
var_dump($list->pop());
var_dump($list->pop());
?>
Output:
string(1) "G" string(5) "Geeks"
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);
$list->push(5);
// Use SplDoublyLinkedList::pop() function
// to remove elements from doubly linked list
var_dump($list->pop());
var_dump($list->pop());
var_dump($list->pop());
?>
Output:
int(5) int(8) int(3)
Reference: https://www.php.net/manual/en/spldoublylinkedlist.pop.php