PHP Manual: DirectoryIterator::key

Description

public function DirectoryIterator::key(): mixed

Get the key for the current DirectoryIterator item.

Parameters

This function has no parameters.

Return Values

The key for the current DirectoryIterator item as an int.

Changelog

Version	Description
8.1.0	When the iterator is uninitialized, an Error is thrown now. Previously, the method returned `false`.

Examples

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";
    }
}
?>

The above example will output something similar to:

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

DirectoryIterator::key

Description

Parameters

Return Values

Changelog

Examples

See Also