FilesystemIterator::__construct

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

FilesystemIterator::__construct — Constructs a new filesystem iterator

说明

public FilesystemIterator::__construct(string $directory, int $flags = FilesystemIterator::KEY_AS_PATHNAME | FilesystemIterator::CURRENT_AS_FILEINFO | FilesystemIterator::SKIP_DOTS)

Constructs a new filesystem iterator from the directory.

参数

directory

The path of the filesystem item to be iterated over.

flags

Flags may be provided which will affect the behavior of some methods. A list of the flags can found under FilesystemIterator predefined constants. They can also be set later with FilesystemIterator::setFlags()

错误／异常

Throws an UnexpectedValueException if the directory does not exist.

Throws a ValueError if the directory is an empty string.

更新日志

版本 说明
8.2.0 Prior to PHP 8.2.0, FilesystemIterator::SKIP_DOTS was always set and could not be removed.
8.0.0 Now throws a ValueError if directory is an empty string; previously it threw a RuntimeException.

示例

示例 #1 FilesystemIterator::__construct() example

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

上述示例在 PHP 8.2 中的输出类似于于：

.
..
apples.jpg
banana.jpg
example.php

Output of the above example prior to PHP 8.2.0 is similar to:

apples.jpg
banana.jpg
example.php

参见