SplDoublyLinkedList::offsetSet

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

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

Descrizione

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

Sets the value at the specified index to value.

Elenco dei parametri

index

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

value

The new value for the index.

Valori restituiti

Nessun valore viene restituito.

Errori/Eccezioni

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
6 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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