function scan_dir($dir) {
$ignored = array('.', '..', '.svn', '.htaccess');
$files = array();
foreach (scandir($dir) as $file) {
if (in_array($file, $ignored)) continue;
$files[$file] = filemtime($dir . "https://stackoverflow.com/" . $file);
}
arsort($files);
$files = array_keys($files);
return ($files) ? $files : false;
}