DirectoryIterator::key

(PHP 5, PHP 7, PHP 8)

DirectoryIterator::keyReturn the key for the current DirectoryIterator item

Descrizione

public DirectoryIterator::key(): mixed

Get the key for the current DirectoryIterator item.

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

The key for the current DirectoryIterator item as an int.

Log delle modifiche

Versione Descrizione
8.1.0 When the iterator is uninitialized, an Error is thrown now. Previously, the method returned false.

Esempi

Example #1 A DirectoryIterator::key() example

<?php
$dir 
= new DirectoryIterator(dirname(__FILE__));
foreach (
$dir as $fileinfo) {
    if (!
$fileinfo->isDot()) {
        echo 
$fileinfo->key() . " => " $fileinfo->getFilename() . "\n";
    }
}
?>

Il precedente esempio visualizzerĂ  qualcosa simile a:

0 => apple.jpg
1 => banana.jpg
2 => index.php
3 => pear.jpg

Vedere anche:

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