ArrayIterator::next

(PHP 5, PHP 7, PHP 8)

ArrayIterator::next — Desplaza a la siguiente entrada

Descripción

public function ArrayIterator::next(): void

Mueve el iterador a la siguiente entrada.

Parámetros

Esta función no contiene ningún parámetro.

Valores devueltos

No se retorna ningún valor.

Ejemplos

Ejemplo #1 Ejemplo de ArrayIterator::next()

<?php
$arrayobject = new ArrayObject();

$arrayobject[] = 'cero';
$arrayobject[] = 'uno';

$iterator = $arrayobject->getIterator();

while($iterator->valid()) {
    echo $iterator->key() . ' => ' . $iterator->current() . "\n";

    $iterator->next();
}
?>

El ejemplo anterior mostrará:

0 => cero
1 => uno

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User Contributed Notes 1 note

down

onelsonsenna at gmail dot com ¶

14 years ago

If you use exchangeArray method of ArrayObject and then next method of ArrayIterator like this:

<?php
    
    $fruits = array("apple", "grape", "lemon");

    $colors = array("blue", "yellow", "green");

    $arrayObject = new ArrayObject($fruits);
    
    $arrayIterator = $arrayObject->getIterator();

    while($arrayIterator->valid()) {

        if ($arrayIterator->current() == "grape") {
            $arrayObject->exchangeArray($colors);
        }

        $arrayIterator->next();
    }

?>

You will receive:

PHP Notice:  ArrayIterator::next(): Array was modified outside object and internal position is no longer valid

So be careful with next and prev operations. :)

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