delete all files not listed in db table

[eluser]JoostV[/eluser]
If you use a key=>value pair array for the files from the DB, you can loop through all files and check if they are in that array

Code:

if(!in_array($file, $file_array)) {
    // Unlink the file
}

You array would have to be like

Code:

$file_array = array('file1.jpg', 'file2.jpg');

When you loop through the folder contents, be careful to unlink only files, not folders or empty values