PHP | SplDoublyLinkedList bottom() Function
The SplDoublyLinkedList::bottom() function is an inbuilt function in PHP which is used to peek the value of node from the beginning of the doubly linked list.
Syntax:
mixed SplDoublyLinkedList::bottom( void )
Parameters: It does not accepts any parameter.
Return Value: It returns the value of first node in doubly linked list.
Below programs illustrate the SplDoublyLinkedList::bottom() function in PHP:
Program 1:
<?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 bottom() function$val = $list->bottom(); // Display resultprint_r($val); ?> |
Output:
1
Program 2:
<?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 bottom() function$val = $list->bottom(); // Display resultprint_r($val); ?> |
Output:
30
Reference: https://www.php.net/manual/en/spldoublylinkedlist.bottom.php
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