DirectoryIterator::key

(PHP 5)

DirectoryIterator::key — Return the key for the current DirectoryIterator item

Descrizione

public string DirectoryIterator::key ( void )

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.

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 visualizzerà qualcosa simile a:

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

Vedere anche:

DirectoryIterator::current() - Return the current DirectoryIterator item.
DirectoryIterator::next() - Move forward to next DirectoryIterator item
DirectoryIterator::rewind() - Rewind the DirectoryIterator back to the start
DirectoryIterator::valid() - Check whether current DirectoryIterator position is a valid file
Iterator::key() - Return the key of the current element