# DirectoryIterator::seek

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

DirectoryIterator::seek — Seek to a DirectoryIterator item

### 说明

public DirectoryIterator::seek(int `$offset`): void

Seek to a given position in the DirectoryIterator.

### 参数

`offset`

  The zero-based numeric position to seek to.

### 返回值

没有返回值。

### 示例

示例 #1 DirectoryIterator::seek() example

Seek to the fourth item in the directory containing the script. The first two are usually `.` and `..`

`<?php
$iterator = new DirectoryIterator(dirname(__FILE__));
$iterator->seek(3);
if ($iterator->valid()) {
echo $iterator->getFilename();
} else {
echo 'No file at position 3';
}
?>`

### 参见

- DirectoryIterator::rewind() - Rewind the DirectoryIterator back to the start
- DirectoryIterator::next() - Move forward to next DirectoryIterator item
- SeekableIterator::seek() - Seeks to a position

`↑` and `↓` to navigate • `Enter` to select • `Esc` to close • `/` to open