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FilesystemIterator クラス

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

はじめに

Filesystem イテレータです。

クラス概要

class FilesystemIterator extends DirectoryIterator {

/* 定数 */

public const int CURRENT_MODE_MASK;

public const int CURRENT_AS_PATHNAME;

public const int CURRENT_AS_FILEINFO;

public const int CURRENT_AS_SELF;

public const int KEY_MODE_MASK;

public const int KEY_AS_PATHNAME;

public const int FOLLOW_SYMLINKS;

public const int KEY_AS_FILENAME;

public const int NEW_CURRENT_AND_KEY;

public const int OTHER_MODE_MASK;

public const int SKIP_DOTS;

public const int UNIX_PATHS;

/* メソッド */

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

public current(): string|SplFileInfo|FilesystemIterator

public getFlags(): int

public key(): string

public next(): void

public rewind(): void

public setFlags(int $flags): void

/* 継承したメソッド */

public DirectoryIterator::current(): mixed

public DirectoryIterator::getBasename(string $suffix = ""): string

public DirectoryIterator::getExtension(): string

public DirectoryIterator::getFilename(): string

public DirectoryIterator::isDot(): bool

public DirectoryIterator::key(): mixed

public DirectoryIterator::next(): void

public DirectoryIterator::rewind(): void

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

public DirectoryIterator::__toString(): string

public DirectoryIterator::valid(): bool

public SplFileInfo::getATime(): int|false

public SplFileInfo::getBasename(string $suffix = ""): string

public SplFileInfo::getCTime(): int|false

public SplFileInfo::getExtension(): string

public SplFileInfo::getFileInfo(?string $class = null): SplFileInfo

public SplFileInfo::getFilename(): string

public SplFileInfo::getGroup(): int|false

public SplFileInfo::getInode(): int|false

public SplFileInfo::getLinkTarget(): string|false

public SplFileInfo::getMTime(): int|false

public SplFileInfo::getOwner(): int|false

public SplFileInfo::getPath(): string

public SplFileInfo::getPathInfo(?string $class = null): ?SplFileInfo

public SplFileInfo::getPathname(): string

public SplFileInfo::getPerms(): int|false

public SplFileInfo::getRealPath(): string|false

public SplFileInfo::getSize(): int|false

public SplFileInfo::getType(): string|false

public SplFileInfo::isDir(): bool

public SplFileInfo::isExecutable(): bool

public SplFileInfo::isFile(): bool

public SplFileInfo::isLink(): bool

public SplFileInfo::isReadable(): bool

public SplFileInfo::isWritable(): bool

public SplFileInfo::openFile(string $mode = "r", bool $useIncludePath = false, ?resource $context = null): SplFileObject

public SplFileInfo::setFileClass(string $class = SplFileObject::class): void

public SplFileInfo::setInfoClass(string $class = SplFileInfo::class): void

public SplFileInfo::__toString(): string

}

定義済み定数

FilesystemIterator::CURRENT_AS_PATHNAME: FilesystemIterator::current() がパス名を返すようにします。
FilesystemIterator::CURRENT_AS_FILEINFO: FilesystemIterator::current() が SplFileInfo のインスタンスを返すようにします。
FilesystemIterator::CURRENT_AS_SELF: FilesystemIterator::current() が $this (FilesystemIterator) を返すようにします。
FilesystemIterator::CURRENT_MODE_MASK: FilesystemIterator::current() をマスクします。
FilesystemIterator::KEY_AS_PATHNAME: FilesystemIterator::key() がパス名を返すようにします。
FilesystemIterator::KEY_AS_FILENAME: FilesystemIterator::key() がファイル名を返すようにします。
FilesystemIterator::FOLLOW_SYMLINKS: RecursiveDirectoryIterator::hasChildren() がシンボリックリンクのリンク先をたどるようにします。
FilesystemIterator::KEY_MODE_MASK: FilesystemIterator::key() をマスクします。
FilesystemIterator::NEW_CURRENT_AND_KEY: FilesystemIterator::KEY_AS_FILENAME | FilesystemIterator::CURRENT_AS_FILEINFO と同じ。
FilesystemIterator::OTHER_MODE_MASK: FilesystemIterator::getFlags() と FilesystemIterator::setFlags() で使うマスク
FilesystemIterator::SKIP_DOTS: ドットファイル (. および ..) をスキップします。
FilesystemIterator::UNIX_PATHS: システムのデフォルトにかかわらず、Unix スタイルのスラッシュでパスをあらわすようにします。コンストラクタから渡された path は変更されないことに注意しましょう。

FilesystemIterator::__construct — 新しい filesystem イテレータを作成する
FilesystemIterator::current — 現在のファイル
FilesystemIterator::getFlags — 処理フラグを取得する
FilesystemIterator::key — 現在のファイルのキーを取得する
FilesystemIterator::next — 次のファイルに移動する
FilesystemIterator::rewind — 先頭に巻き戻す
FilesystemIterator::setFlags — 処理フラグを設定する

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User Contributed Notes 4 notes

down

paul at paulgarvin dot net ¶

10 years ago


You may be wondering, like I did, what is the difference between this class and DirectoryIterator?

When you iteterate using DirectoryIterator each "value" returned is the same DirectoryIterator object. The internal state is changed so when you call isDir(), getPathname(), etc the correct information is returned. If you were to ask for a key when iterating you will get an integer index value.

FilesystemIterator (and RecursiveDirectoryIterator) on the other hand returns a new, different SplFileInfo object for each iteration step. The key is the full pathname of the file. This is by default. You can change what is returned for the key or value using the "flags" arguement to the constructor.

down

blackout at drunkenlords dot com ¶

3 years ago


Here's a great little drop in replacement for FilesystemIterator I wrote to easily Iterate your filesystem, including:

* Sorting - using ArrayIterator
* Regex Matching - using RegexIterator
* Limiting - using LimitIterator

It's fully chainable

<?php

// Sort by filemtime
$files = (new AdvancedFilesystemIterator('/path/to/files'))->sortByMTime();

// Sort by filemtime -> Limit output to 10
$files = (new AdvancedFilesystemIterator('/path/to/files'))->sortByMTime()->limit(0, 10);

// Sort by filemtime -> Only get CSV files -> Limit to 10
$files = (new AdvancedFilesystemIterator('/path/to/files'))->sortByMTime()->match('/csv$/')->limit(0, 10);

// Sort by filemtime -> Only get CSV files -> Limit to 10 -> and back to sorting by Filename
$files = (new AdvancedFilesystemIterator('/path/to/files'))->sortByMTime()->match('/csv$/')->limit(0, 10)->sortByFilename();

// Sort by any of SplFileInfo's get*() methods i.e. Owner, CTime, Basename, ATime, Perms, Type, isFile, anything
$files = (new AdvancedFilesystemIterator('/path/to/files'))->sortByOwner();

// Foreach
foreach ((new AdvancedFilesystemIterator('/path/to/files'))->sortByMTime()->match('/csv$/')->limit(0, 10) AS $file)
{
    print $file->getFilename() . "<br>\n";
}

// The Class
class AdvancedFilesystemIterator extends ArrayIterator
{
    public function __construct(string $path, int $flags = FilesystemIterator::KEY_AS_PATHNAME | FilesystemIterator::CURRENT_AS_FILEINFO | FilesystemIterator::SKIP_DOTS)
    {
        parent::__construct(iterator_to_array(new FilesystemIterator($path, $flags)));
    }

    public function __call(string $name, array $arguments)
    {
        if (preg_match('/^sortBy(.*)/', $name, $m)) return $this->sort('get' . $m[1]);
        throw new MemberAccessException('Method ' . $methodName . ' not exists');
    }

    public function sort($method)
    {
        if (!method_exists('SplFileInfo', $method)) throw new InvalidArgumentException(sprintf('Method "%s" does not exist in SplFileInfo', $method));

        $this->uasort(function(SplFileInfo $a, SplFileInfo $b) use ($method) { return (is_string($a->$method()) ? strnatcmp($a->$method(), $b->$method()) : $b->$method() - $a->$method()); });

        return $this;
    }

    public function limit(int $offset = 0, int $limit = -1)
    {
        return parent::__construct(iterator_to_array(new LimitIterator($this, $offset, $limit))) ?? $this;
    }

    public function match(string $regex, int $mode = RegexIterator::MATCH, int $flags = 0, int $preg_flags = 0)
    {
        return parent::__construct(iterator_to_array(new RegexIterator($this, $regex, $mode, $flags, $preg_flags))) ?? $this;
    }
}

down

thedilab at gmail dot com ¶

9 years ago


DirectoryIterator returns virtual directories "." and ".." in a loop.
But FilesystemIterator ignores them.

down

-20

ohcc at 163 dot com ¶

4 years ago


It's impossible to return dots (. and ..) by FilesystemIterator.

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FilesystemIterator クラス

はじめに

クラス概要

定義済み定数

目次

User Contributed Notes 4 notes