Need to delete directories older than a week

[olly2111]

Hi,

I have a backup system which performs a backup of a home dir every day.

What i want to do is only keep the last 7 backups (so the last weeks).

I will be running this via a cronjob.
I can get a list of all the files in the backup directory but im not too sure how to proceed.

Can anyone help?

Thanks

[drew010]

i think you could use the function [man]filemtime[/man] to get the time the file was last modified (most likely the creation date). It will give you a timestamp so you can then use simple arithmetic to calculate if it was longer than 7 days, if so delete it.

$days = 7;


$seconds = 60 * 60 * 24 * $days;


//include this in your directory loop to get the mod times
$modtime = filemtime($filename);

if (time() - $modtime > $seconds) { //old
  unlink($filename);
}

hope it helps some.

[olly2111]

Hi,

Thanks for your reply however i forgot to tell you that it is directories that i need to delete which contain files.
the rmdir function doesnt work as the directory isnt empty.

In this same file i also have a backup mysql section too, however that doesnt want to work either.

Here is the code:

#!/usr/bin/php
<?
include("function.copyr.php");

$backupdir = date('j-m-y');

$days = 7;
//$seconds = 60 * 60 * 24 * $days;
$seconds = 1;

copyr("/home/acorn/", "/backup/acornbackup/html/Day/$backupdir");

if(!exec("mysqldump -uuser -ppass acorn_data > /backup/acornbackup/mysql/Day/$backupdir/acorn_data.sql")) {
        echo "Error with mySQL";
}

if ($handle = opendir("/backup/acornbackup/html/Day")) {
   while (false !== ($file = readdir($handle))) {
       if (is_dir($file)) {
        $modtime = filemtime($file);
        if (time() - $modtime > $seconds) { //old
        unlink($file);
        }
       }
   }
    closedir($handle);
}

exec("chown acorn:acorn -R /backup/acornbackup/");
exec("chmod 655 -R /backup/acornbackup/");

?>

Can anyone shed some light on this?

Thanks

[drew010]

try this...

//...
$dir = "/backup/acornbackup/html/Day";
if ($handle = opendir($dir)) {
   while (false !== ($file = readdir($handle))) {
       if (is_dir($file)) {
        list($day, $month, $year) = explode("-", $file);
        $created = mktime(0, 0, 0, $month, $day, $year);
        $now = mktime(0, 0, 0);
        if ($now - $created >= $seconds) { //old
          //unlink($file);
          `rm -rf $dir/$file`;
        }
       }
   }
    closedir($handle);
} 

hopefully the backticks will successfully execute the recursive directory removal and the rest should be ok. if not you may need to make a function to go through the directory and unlink all the files individually.

[olly2111]

Hi,

Thanks again for the reply.

I have tried what you said but nothing seemed to be deleted.

I then echoed out $created and found that it was set to -1, is this right?

Also this is outputted:

-1
rm: cannot remove .' or..'
-1
rm: cannot remove .' or..'

[drew010]

yeah i forgot about that, it lists the directories . and .. so you should do something like
if ($dir == "." || $dir = "..") continue;