RecursiveCallbackFilterIterator::hasChildren

[edit] Last updated: Fri, 25 May 2012

RecursiveDirectoryIterator クラス

(PHP 5)

導入

RecursiveDirectoryIterator は、ファイルシステムのディレクトリを再帰的に反復処理するためのインターフェイスです。

クラス概要

RecursiveDirectoryIterator extends FilesystemIterator implements Traversable , Iterator , SeekableIterator , RecursiveIterator {

/* メソッド */

public __construct ( string $path [, int $flags = FilesystemIterator::KEY_AS_PATHNAME | FilesystemIterator::CURRENT_AS_FILEINFO ] )

public mixed getChildren ( void )

public string getSubPath ( void )

public string getSubPathname ( void )

public bool hasChildren ([ bool $allow_links ] )

public string key ( void )

public void next ( void )

public void rewind ( void )

/* 継承 */

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

public mixed FilesystemIterator::current ( void )

public int FilesystemIterator::getFlags ( void )

public string FilesystemIterator::key ( void )

public void FilesystemIterator::next ( void )

public void FilesystemIterator::rewind ( void )

public void FilesystemIterator::setFlags ([ int $flags ] )

}

変更履歴

バージョン	説明
5.3.0	親クラスとして FilesystemIterator が導入されました。これまでは、DirectoryIterator が親クラスでした。
5.3.0	SeekableIterator を実装しました。
5.2.11, 5.3.1	`RecursiveDirectoryIterator::FOLLOW_SYMLINKS` が追加されました。

RecursiveDirectoryIterator::__construct — RecursiveDirectoryIterator を作成する
RecursiveDirectoryIterator::getChildren — ディレクトリであれば、現在のエントリに対するイテレータを返す
RecursiveDirectoryIterator::getSubPath — サブパスを取得する
RecursiveDirectoryIterator::getSubPathname — サブパスと名前を取得する
RecursiveDirectoryIterator::hasChildren — 現在のエントリがディレクトリかつ '.' もしくは '..' でないかどうかを返す
RecursiveDirectoryIterator::key — 現在のディレクトリエントリのパスとファイル名を返す
RecursiveDirectoryIterator::next — 次のエントリに移動する
RecursiveDirectoryIterator::rewind — ディレクトリを最初に巻き戻す

RecursiveDirectoryIterator::__construct

RecursiveCallbackFilterIterator::hasChildren

[edit] Last updated: Fri, 25 May 2012

add a note User Contributed Notes RecursiveDirectoryIterator

Josh Heidenreich 14-Feb-2012 03:51


The returned object is an iterator of SplFileInfo objects.

joelhy 22-Feb-2011 07:39


Here is how to empty a directory using iterator: 

<?php

function empty_dir($dir) {

    $iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir),

                                              RecursiveIteratorIterator::CHILD_FIRST);

    foreach ($iterator as $path) {

      if ($path->isDir()) {

         rmdir($path->__toString());

      } else {

         unlink($path->__toString());

      }

    }

//    rmdir($dir);

}

?>

antennen 02-Jan-2011 09:40


If you use RecursiveDirectoryIterator with RecursiveIteratorIterator and run into UnexpectedValueException you may use this little hack to ignore those directories, such as lost+found on linux.



<?php

class IgnorantRecursiveDirectoryIterator extends RecursiveDirectoryIterator {

    function getChildren() {

        try {

            return parent::getChildren();

        } catch(UnexpectedValueException $e) {

            return new RecursiveArrayIterator(array());

        }

    }

}

?>



Use just like the normal RecursiveDirectoryIterator.

Thriault 09-Apr-2010 12:05


If you would like to get, say, all the *.php files in your project folder, recursively, you could use the following:



<?php



$Directory = new RecursiveDirectoryIterator('path/to/project/');

$Iterator = new RecursiveIteratorIterator($Directory);

$Regex = new RegexIterator($Iterator, '/^.+\.php$/i', RecursiveRegexIterator::GET_MATCH);



?>



$Regex will contain a single index array for each PHP file.

megar 15-Jul-2009 01:57


Usage example:

To see all the files, and count the space usage:



<?php

$ite=new RecursiveDirectoryIterator("/path/");



$bytestotal=0;

$nbfiles=0;

foreach (new RecursiveIteratorIterator($ite) as $filename=>$cur) {

    $filesize=$cur->getSize();

    $bytestotal+=$filesize;

    $nbfiles++;

    echo "$filename => $filesize\n";

}



$bytestotal=number_format($bytestotal);

echo "Total: $nbfiles files, $bytestotal bytes\n";

?>

Justin Deltener 10-Jun-2009 09:45


If you don't get a fully recursive listing, remember to check your permissions on the folders. I just spent 2 hours to find out my root folder didn't have +x on it. I did a chmod g+x and now get a full listing. Oddly, I was able to get a listing of files/folders one level UNDER that folder, but nothing beyond that point which was cause for the confusion.

alvaro at demogracia dot com 18-Sep-2008 08:15


Usage example:



<?php



$path = realpath('/etc');



$objects = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path), RecursiveIteratorIterator::SELF_FIRST);

foreach($objects as $name => $object){

    echo "$name\n";

}



?>



This prints a list of all files and directories under $path (including $path ifself). If you want to omit directories, remove the RecursiveIteratorIterator::SELF_FIRST part.

add a note

RecursiveDirectoryIterator クラス

導入

クラス概要

変更履歴

目次