DirectoryIterator::isWritable
DirectoryIterator::next
DirectoryIterator
PHP Manual

# DirectoryIterator::key

(PHP 5)

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

### 설명

public string DirectoryIterator::key ( void )

Get the key for the current DirectoryIterator item.

### 인수

이 함수는 인수가 없습니다.

### 반환값

The key for the current DirectoryIterator item.

### 예제

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";
}
}
?>`

위 예제의 출력 예시:

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

### 참고

- 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

DirectoryIterator::isWritable
DirectoryIterator::next
DirectoryIterator
PHP Manual