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

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User Contributed Notes 16 notes

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107

Thriault ¶

14 years ago

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.

down

sun ¶

10 years ago

Since I continue to run into implementations across the net that are unintentionally running into this trap — beware:

RecursiveDirectoryIterator recurses without limitations into the full filesystem tree.

Do NOT do the following, unless you intentionally want to infinitely recurse without limitations:

<?php
$directory = new \RecursiveDirectoryIterator($path);
$iterator = new \RecursiveIteratorIterator($directory);
$files = array();
foreach ($iterator as $info) {
  if (...custom conditions...) {
    $files[] = $info->getPathname();
  }
}
?>

1. RecursiveDirectoryIterator is just a RecursiveIterator that recurses into its children, until no more children are found.

2. The instantiation of RecursiveIteratorIterator causes RecursiveDirectoryIterator to *immediately* recurse infinitely into the entire filesystem tree (starting from the given base path).

3. Unnecessary filesystem recursion is slow.  In 90% of all cases, this is not what you want.

Remember this simple rule of thumb:

→ A RecursiveDirectoryIterator must be FILTERED or you have a solid reason for why it shouldn't.

On PHP <5.4, implement the following - your custom conditions move into a proper filter:

<?php
$directory = new \RecursiveDirectoryIterator($path, \FilesystemIterator::FOLLOW_SYMLINKS);
$filter = new MyRecursiveFilterIterator($directory);
$iterator = new \RecursiveIteratorIterator($filter);
$files = array();
foreach ($iterator as $info) {
  $files[] = $info->getPathname();
}

class MyRecursiveFilterIterator extends \RecursiveFilterIterator {

  public function accept() {
    $filename = $this->current()->getFilename();
    // Skip hidden files and directories.
    if ($name[0] === '.') {
      return FALSE;
    }
    if ($this->isDir()) {
      // Only recurse into intended subdirectories.
      return $name === 'wanted_dirname';
    }
    else {
      // Only consume files of interest.
      return strpos($name, 'wanted_filename') === 0;
    }
  }

}
?>

On PHP 5.4+, PHP core addressed the slightly cumbersome issue of having to create an entirely new class and you can leverage the new RecursiveCallbackFilterIterator instead:

<?php
$directory = new \RecursiveDirectoryIterator($path, \FilesystemIterator::FOLLOW_SYMLINKS);
$filter = new \RecursiveCallbackFilterIterator($directory, function ($current, $key, $iterator) {
  // Skip hidden files and directories.
  if ($current->getFilename()[0] === '.') {
    return FALSE;
  }
  if ($current->isDir()) {
    // Only recurse into intended subdirectories.
    return $current->getFilename() === 'wanted_dirname';
  }
  else {
    // Only consume files of interest.
    return strpos($current->getFilename(), 'wanted_filename') === 0;
  }
});
$iterator = new \RecursiveIteratorIterator($filter);
$files = array();
foreach ($iterator as $info) {
  $files[] = $info->getPathname();
}
?>

Have fun!

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alvaro at demogracia dot com ¶

16 years ago

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.

down

TDP ¶

7 years ago

There are differences between Windows and Linux about the order of the files.

<?php
$it = new RecursiveIteratorIterator(
    new RecursiveDirectoryIterator( 'path/to/dir' )
    //, does not matter the flag
    );
...
?>

On Windows, you will get the files ordered by name. On Linux they are not ordered.

down

catinahat at cool dot fr dot nf ¶

11 years ago

If you need to convert a nested directory tree into a multidimensional array, use this code:



<?php

$ritit = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($startpath), RecursiveIteratorIterator::CHILD_FIRST);

$r = array();

foreach ($ritit as $splFileInfo) {

   $path = $splFileInfo->isDir()

         ? array($splFileInfo->getFilename() => array())

         : array($splFileInfo->getFilename());



   for ($depth = $ritit->getDepth() - 1; $depth >= 0; $depth--) {

       $path = array($ritit->getSubIterator($depth)->current()->getFilename() => $path);

   }

   $r = array_merge_recursive($r, $path);

}



print_r($r);

?>

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antennen ¶

13 years ago

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 new IgnorantRecursiveDirectoryIterator($this->getPathname());

        } catch(UnexpectedValueException $e) {

            return new RecursiveArrayIterator(array());

        }

    }

}

?>



Use just like the normal RecursiveDirectoryIterator.

down

megar ¶

15 years ago

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";
?>

down

alexandrebr at gmail dot com ¶

8 years ago

I tried to use RecursiveDirectoryIterator to dump all files (and theirs properties, such as size/is_link/is_dir/mtime/perms/owner/group) from a large directory (~400.000 files), filtering some specific wanted files/folders.

Using RecursiveDirectoryIterator and SplFileInfo, dump was taking about 50 seconds to perform, but it was working.

However, to improve performance, I decided to make another version of the same script, using only direct file functions, such as "readdir", "filesize", "filemtime", etc.., and adding recursivity myself (if(is_dir($path)) doRecursivity($path);

After running it, script went from ~50s to only ~20s to complete (On Linux CentOS 7, SSD 300IPs).

Strangely, on Windows 7, Sata3 (with exactly same files [mirrored]) the time went from ~63s to ~57s.

I believe that this payload is due to the OO approach of SPL, which runs lots of unnecessary extra code to perform the same tasks with more reliability, while direct file funcions are more like alias to C corresponding functions, and thereover, must faster.

So, if you're dealing with a large amount of files, using RecursiveDirectoryIterator is probably not the way to go.

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dev_zakaria at outlook dot com ¶

5 years ago

if you want to show the all files from all directories you have to follow it- 

$dir = new RecursiveDirectoryIterator(getcwd());
$files = new RecursiveIteratorIterator($dir);

foreach($files as $file){
   echo $file->getFileName();
   echo PHP_EOL; // for new line
}

Now, if you want to show the full path, then follow this- 

$dir = new RecursiveDirectoryIterator(getcwd());
$files = new RecursiveIteratorIterator($dir);

foreach($files as $file){
   echo $file->getPath().$file->getFileName();
   echo PHP_EOL;
}

If you want to skip the dots, you need to change the first line with this-
$dir = new RecursiveDirectoryIterator(getcwd(), RecursiveDirectoryIterator::SKIP_DOTS);

down

Josh Heidenreich ¶

12 years ago

The returned object is an iterator of SplFileInfo objects.

down

flobee ¶

9 years ago

In this doc page i see things for to hide hidden files  (also for opendir() or readdir() .... this should be mentiond all there 
<?php
// not hidden but on most OS systems Win, *nix, OSX..
if ($file == '.' || $file == '..') { 
     // "." current dir info, 
     // ".." dir above info,
          continue; 
?>
or
<?php
if $name[0] === '.' // NOT OK FOLKS
?>
Think: 
"... and then came Polly.avi" is the title of the Movi. What do you do then?

Windows does it different with hidden files than unix based systems.

For unix based systems  something like this should work:
<?php
if (preg_match('/^(\.\w+|\.$|\.\.$)/i', $location)) {
/* is hidden:
    .
    ..
    .dir
    .file
*/
}
// must be ok: "..some thing", "... some thing"
?>

I know you do it (if $name[0] === '.' ) because it is much faster. But it is NOT correct and some day you miss things like me today :-)

down

divinity76+spam at gmail dot com ¶

2 years ago

if you just want a plain array, recursively, of all files (not directories), try

<?php

/** 
 * returns a plain string array of path to all files in a directory, and subdirectories,
 * but does not return directories themselves. (meaning if a directory is empty, it will not be included at all)
 * 
 * @param string $dir
 * @param bool $realpath
 * @throws UnexpectedValueException if $dir is not readable/does not exists
 * @return string[] files
 */
function get_file_list_recursively(string $dir, bool $realpath = false): array
{
    $files = array();
    $files = [];
    foreach ((new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir, RecursiveDirectoryIterator::SKIP_DOTS))) as $file) {
        /** @var SplFileInfo $file */
        if ($realpath) {
            $files[] = $file->getRealPath();
        } else {
            $files[] = $file->getPathname();
        }
    }
    return $files;
}
?>

sample return:
<?php
array (
  0 => '/home/hans/scraping/1650518081RESULTS.txt',
  1 => '/home/hans/scraping/1650518121RESULTS.txt',
  2 => '/home/hans/scraping/1650518679RESULTS.txt',
  3 => '/home/hans/scraping/1650518780RESULTS.txt',
  4 => '/home/hans/scraping/1650522198RESULTS.txt',
  5 => '/home/hans/scraping/1650522927RESULTS.txt',
  6 => '/home/hans/scraping/1650525391RESULTS.txt',
  7 => '/home/hans/scraping/check_cache.php',
  8 => '/home/hans/scraping/foo/bar.txt',
  9 => '/home/hans/scraping/foobar.txt',
  10 => '/home/hans/scraping/GoodProxyDaemon.php',
);
?>

(note to editor, if you can find a better sample return, feel absolutely free to overwrite the one above)

Atelier ”慶”

WEBクリエイター歴２０年、最先端技術と安心をお届けします。

PHPのお勉強！

RecursiveDirectoryIterator クラス

はじめに

クラス概要

目次

Found A Problem?

User Contributed Notes 16 notes