Rmdir problem (directory not empty ... even though it really is)

[23style]

i have a little system that creates dirs and uploads files to them .. when the dirs are created the permissions are
0777 or drwxrwxrwx

i also have a function that deletes everything inside the directory and then the directory itself...this works fine in my test environemnt (linux / apache) but on the production server (also linux / apache w apache2.0 filter) it deletes all the files in the directory but gives me a directory not empty error:

Warning: rmdir(../../../sections/portfolio/37): Directory not empty

i checked the dir and it is in fact empty, but the really strange thing is that the permissions are now changed to:
1411 or dr---x--t

can anyone help me out with this? i've never encountered this problem before...really weird.

here is the rmdir function (works fine in test server and many others..)

function delete_dir($file) { 
        if (file_exists($file)) { 
            chmod($file, 0777); 
            if (is_dir($file)) { 
                $handle = opendir($file);  

                while($filename = readdir($handle)) { 
                    if ($filename != "." && $filename != "..") { 
                        delete_dir($file."/".$filename); 
                    } 
                } 
                closedir($handle); 
                rmdir($file); 
            } else { 
                unlink($file); 
            } 
        } 
    }

[23style]

solved...

its such a stupid solution, i feel like a moron....most of my coding problems though are problems like this...spelling mistakes, little things missing.

the solution is to add a slash to the end of the dir you are deleting:

delete_dir("blahblah");

will cause the errors i mentioned before but

delete_dir("blahblah/");

will be ok.