Move forward to next DirectoryIterator item

# DirectoryIterator::next

(PHP 5, PHP 7, PHP 8)

DirectoryIterator::next — Move forward to next DirectoryIterator item

### 说明

public function DirectoryIterator::next(): void

Move forward to the next DirectoryIterator item.

### 参数

此函数没有参数。

### 返回值

没有返回值。

### 示例

示例 #1 DirectoryIterator::next() example

List the contents of a directory using a while loop.

    <?php
    $iterator = new DirectoryIterator(dirname(__FILE__));
    while($iterator->valid()) {
        echo $iterator->getFilename() . "\n";
        $iterator->next();
    }
    ?>

以上示例的输出类似于：

    .
    ..
    apple.jpg
    banana.jpg
    index.php
    pear.jpg

### 参见

- DirectoryIterator::current() - Return the current DirectoryIterator item
- DirectoryIterator::key() - Return the key for the current DirectoryIterator item
- DirectoryIterator::rewind() - Rewind the DirectoryIterator back to the start
- DirectoryIterator::valid() - Check whether current DirectoryIterator position is a valid file
- Iterator::next() - 向前移动到下一个元素

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