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PHP | SplDoublyLinkedList pop() Function
  • Last Updated : 23 Aug, 2019

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 poped node in doubly linked list.

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

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