$dir = "d:\workspace";
function list_file($dir = '.'){
$list = scandir($dir);
echo '<ol>';
foreach($list as $file){
$target = "$dir/$file";
if ( is_dir($target) && $file != '.' && $file != '..' ){
echo "<li style=\"color:red;font-weight:bold;\">$file</li>";
list_file($target);
} else if ( $file != '.' && $file != '..'){
echo "<li>$file</li>";
}
}
echo '</ol>';
}
list_file($dir);