numbering files in a dir

[___apl___]

i want to have a bunch of files in a directory and use a loop function to number them. but i dont know how to do this, since i'm still a beginner at php. can anyone help me out?
thanks

[hand]

<?php 
$handle=opendir ('.');
while ($file = readdir ($handle)) {
    $i++;
    if ($file != "." && $file != "..") {
            print "File#: $i / $file<BR>\n";
    }
}
closedir($handle);
?> 

More informations about file handling:
http://www.php3.de/manual/en/ref.filesystem.php