PHP RecursiveDirectoryIterator

I  want to do a RecursiveDirectoryIterator on a set of folders in a directory, say ./temp and then list the files in each folder according to the name of the folder.

For example I have the folders A and B.

In A, I have a list of files say, 1.txt, 2.php, 2.pdf, 3.doc, 3.pdf.

In B, I have 1.pdf, 1.jpg, 2.png.

I want my results to be like this:

A => List of files in A
B => List of files in B

How can this be done?

Use a combination of RecursiveDirectoryIterator and RecursiveIteratorIterator to iterate through all subdirectories.

The snippet below will do what you require, although it is limited to only creating an array one array deep... this is to avoid getting into a recursive mess, within an already-confusing-to-procedural-brains small snippet.

$array = array();

foreach ($iterator = new RecursiveIteratorIterator(
    new RecursiveDirectoryIterator("./temp", 
        RecursiveDirectoryIterator::SKIP_DOTS),
    RecursiveIteratorIterator::SELF_FIRST) as $item) {
    // Note SELF_FIRST, so array keys are in place before values are pushed.

        $subPath = $iterator->getSubPathName();
            if($item->isDir()) {
                // Create a new array key of the current directory name.
                $array[$subPath] = array();
            }
            else {
                // Add a new element to the array of the current file name.
                $array[$subPath][] = $subPath;
            }
    }
}