PHP lists all files and folders in a directory

Use the following PHP code snippet to list all files and folders in a directory

function list_files($dir)
{
 if(is_dir($dir))
 {
 if($handle = opendir ($dir))
 {
 while(($file = readdir($handle)) !== false)
 {
 if($file != "." && $file != ".." & ;& $file != "Thumbs.db"/*pesky windows, images..*/)
 {
 echo ''."n";

Usage:

 list_files("images/"); //This will list all files of images folder
?>

PHP