clear and delete the folder after the time specified in php

1<?
2$days = 1;
3$dir = dirname ( __FILE__ );
4
5$nofiles = 0;
6
7    if ($handle = opendir($dir)) {
8    while (( $file = readdir($handle)) !== false ) {
9        if ( $file == '.' || $file == '..' || is_dir($dir.'/'.$file) ) {
10            continue;
11        }
12
13        if ((time() - filemtime($dir.'/'.$file)) > ($days *86400)) {
14            $nofiles++;
15            unlink($dir.'/'.$file);
16        }
17    }
18    closedir($handle);
19    echo "Total files deleted: $nofiles \n";
20}
21?>