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<FilesystemIterator::getFlagsFilesystemIterator::next>
^FilesystemIteratorLast updated: Mon, 26 Oct 2026

FilesystemIterator::key

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

FilesystemIterator::key — Retrieve the key for the current file

Description

public function FilesystemIterator::key(): string

Parameters

This function has no parameters.

Return Values

Returns the pathname or filename depending on the set flags. See the FilesystemIterator constants.

Examples

Example #1 FilesystemIterator::key() example

This example will list the contents of the directory containing the script. 

<?php
$iterator = new FilesystemIterator(dirname(__FILE__), FilesystemIterator::KEY_AS_FILENAME);
foreach ($iterator as $fileinfo) {
    echo $iterator->key() . "\n";
}
?>

Output of the above example in PHP 8.2 is similar to:

.
..
apple.jpg
banana.jpg
example.php

See Also


<FilesystemIterator::getFlagsFilesystemIterator::next>
^FilesystemIteratorLast updated: Mon, 26 Oct 2026