The RecursiveDirectoryIterator class

catinahat at cool dot fr dot nf (2013-01-19 00:44:51)

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);
?>

Josh Heidenreich (2012-02-14 03:51:40)

The returned object is an iterator of SplFileInfo objects.

joelhy (2011-02-22 19:39:51)

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 (2011-01-02 09:40:22)

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.

Thriault (2010-04-09 00:05:52)

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 (2009-07-15 01:57:07)

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 (2009-06-10 09:45:03)

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 (2008-09-18 08:15:45)

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.