PHP 8.1.0 RC 2 available for testing

SplDoublyLinkedList::offsetSet

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

SplDoublyLinkedList::offsetSetSets the value at the specified $index to $value

Description

public SplDoublyLinkedList::offsetSet(?int $index, mixed $value): void

Sets the value at the specified index to value.

Parameters

index

The index being set. If null, the next value will be added after the last item.

value

The new value for the index.

Return Values

No value is returned.

Errors/Exceptions

Throws OutOfRangeException when index is out of bounds or when index cannot be parsed as an integer.

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chanel at lipski-development dot de
3 years ago
How to change elements of a SplDoublyLinkedList
<?php

function change_elements($list,$old_index,$new_index){
   
$tmp1=$list->offsetGet($old_index);
$tmp2=$list->offsetGet($new_index);
$list->offsetSet($old_index,$tmp2);
$list->offsetSet($new_index,$tmp1);

}

$list=new SplDoublyLinkedList();
$list->push("A");
$list->push("B");
$list->push("C");

/*
OUTPUT
A
B
C
*/

change_elements($list,0,1);

/*
OUTPUT
B
A
C
*/

?>
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