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PHP | SplDoublyLinkedList pop() Function

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  • Last Updated : 22 Aug, 2022
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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 accepts any parameters. Return Value: This function returns the value of popped node in doubly linked list. Below programs illustrate the SplDoublyLinkedList::pop() function in PHP: Program 1: 

php




<?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




<?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


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