DirectoryIterator::key
(PHP 5, PHP 7, PHP 8)
DirectoryIterator::key — Return the key for the current DirectoryIterator item
Descrizione
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 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
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