osTicket backup/delete

<?php
/**
 * Removes obsolete tickets, can be run as often as you choose.
 * Ideally via cron:
# Every 28 days?
* * /28 * * nobody /usr/bin/php /path/to/remove_obsolete_tickets.php

YOU WILL NEED TO CONFIGURE THE FOLLLOWING:
 */

define('BACKUPDIR','/home/backups/');
define('DELETEMONTHS', 6); //Any closed ticket older than this many months will be archived/deleted.
define('MY_USER_ID', 'Grizly');
define('CRONFRIENDLY', true); //change to false to show more output.

/**
 * Should be able to ignore from here, until you are ready to start pruning.
 * Then go to bottom, un-comment the line:  // return $t->delete();
 * This will start actually deleting tickets, so, make sure its backing them up first.
 */
if(! php_sapi_name () == 'cli')
    die('Cannot be run from browser.. ');
$_SERVER ['REMOTE_ADDR'] = 'localhost';
require_once ('main.inc.php');
$thisstaff = new Staff(MY_USER_ID);

// select old messages.. we probably don't need any of them
$select = 'SELECT ticket_id FROM ' . TICKET_TABLE . " WHERE status='closed' AND closed < DATE_SUB(NOW(), INTERVAL " . DELETEMONTHS . ' MONTH)';

$res = db_query ( $select );
if ($res && $num =db_num_rows ( $res )) {
    print "Found $num matching deletables!\n";
    $messages = db_assoc_array ( $res, true );
    if ($messages && !CRONFRIENDLY)
        print "Deleting old Messages\n";

    foreach ( $messages as $ticket) {
        if (! delete_ticket ( $ticket['ticket_id'] ))
            print 'Failed to delete ticket_id: ' .  $ticket['ticket_id']  . "\n\n";
    }
} elseif (!CRONFRIENDLY){
    print "Didn't find anything to delete.";
}

/**
 * Uses osTicket functions to remove a ticket correctly.
 */
function delete_ticket($id) {
    $t = new Ticket ( $id );
    print "Deleting old ticket $id:" . $t->getSubject () . "\n";
    // save backup?
    // If you don't want backups, you don't need a staff-id either.. odd, but there you go.
    // Simply comment out this whole part, and uncomment the $t->delete(); line..
    $pdf = new Ticket2PDF ( $t, 'A4', true );
    $name = 'Ticket-' . $t->getExtId () . '.pdf';
    $file = BACKUPDIR. $name;
    $string = $pdf->Output ( $file, 'F' );
    // return $t->delete();
    return true;
}