PHP SplDoublyLinkedList offsetSet() Function

PHP | SplDoublyLinkedList getIteratorMode() Function

Last Updated : 21 Nov, 2019

The SplDoublyLinkedList::getIteratorMode() function is an inbuilt function in PHP which is used to return the mode of iteration. Syntax:

int SplDoublyLinkedList::getIteratorMode( void )

Parameters: This function does not accept any parameters. Return Value: This function returns the different modes and flags that affect the iteration. Below programs illustrate the SplDoublyLinkedList::getIteratorMode() function in PHP: Program 1:

php

<?php

// Declare an empty SplDoublyLinkedList 
$list = new SplDoublyLinkedList();

// Add the element into SplDoublyLinkedList
$list->setIteratorMode(SplDoublyLinkedList::IT_MODE_FIFO); 

// Use getIteratorMode() function
$mode = $list->getIteratorMode();
var_dump($mode);

// Add the element into SplDoublyLinkedList
$list->setIteratorMode(SplDoublyLinkedList::IT_MODE_DELETE); 

// Use getIteratorMode() function
$mode = $list->getIteratorMode();
var_dump($mode);

// Add the element into SplDoublyLinkedList
$list->setIteratorMode(SplDoublyLinkedList::IT_MODE_LIFO); 

// Use getIteratorMode() function
$mode = $list->getIteratorMode();
var_dump($mode);

?>

Output:

int(0)
int(1)
int(2)

Program 2:

php

<?php

// Declare an empty SplDoublyLinkedList 
$list = new SplDoublyLinkedList();

// Add the element into SplDoublyLinkedList
$list->setIteratorMode(SplDoublyLinkedList::IT_MODE_FIFO
                    | SplDoublyLinkedList::IT_MODE_DELETE
                    | SplDoublyLinkedList::IT_MODE_LIFO); 

$mode = $list->getIteratorMode();

var_dump($mode & SplDoublyLinkedList::IT_MODE_FIFO);
                
var_dump($mode & SplDoublyLinkedList::IT_MODE_LIFO);
                
var_dump($mode & SplDoublyLinkedList::IT_MODE_DELETE);
                
var_dump($mode & SplDoublyLinkedList::IT_MODE_KEEP); 

?>

Output:

int(0)
int(2)
int(1)
int(0)

Reference: https://www.php.net/manual/en/spldoublylinkedlist.getiteratormode.php

PHP SplDoublyLinkedList offsetSet() Function

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