SymfonyWorld Online 2022 Winter Edition

SplDoublyLinkedList::offsetSet

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

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

Descrição

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

Sets the value at the specified index to value.

Parâmetros

index

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

value

The new value for the index.

Valor Retornado

Não há valor retornado.

Erros

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

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User Contributed Notes 1 note

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chanel at lipski-development dot de
4 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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