Delete expired email from IMAP server

mail_expired_del.php

<?php

$server_spec = "{****-****.accessdomain.com:993/imap/ssl}";

$mbox = imap_open($server_spec, $argv[1], $argv[2], OP_HALFOPEN)
 or die("can't connect: " . imap_last_error());

echo "=================== Connected  ===================\n";
echo "Getting list of mailboxes...\n";
$list = imap_getmailboxes($mbox, $server_spec, "*");
if (is_array($list)) {
    foreach ($list as $val) {
        //echo imap_utf7_decode($val->name) . "\n";
        imap_reopen($mbox, $val->name, CL_EXPUNGE)
          or die("can't reopen: " . imap_last_error());

        echo "Getting next mailbox info...\n";
        $MC = imap_check($mbox);
        echo "=================== Mailbox ===================\n";
        echo "Name: " . $MC->Mailbox . "\n";
        $deldate = DateTime::createFromFormat(DateTime::RFC2822 . '+', $MC->Date)
          or die("can't get current system date: " . DateTime::getLastErrors());
        $deldate->modify('-1 month');
        echo "System Date: ". $MC->Date . "\n";
        echo "Total messages: ". $MC->Nmsgs . "\n";

        if ($MC->Nmsgs == 0) { continue; }

        echo "Fetching message list...\n";
        $result = imap_fetch_overview($mbox,"1:{$MC->Nmsgs}");

        if (is_array($result)) {
            echo("Filtering message list...\n");
            foreach ($result as $n => $overview) {
                if ($overview->deleted) { continue; }

               echo '(' . $n . ') ' . $overview->date . ' => ' . $overview->subject;

                $msgdate = DateTime::createFromFormat(DateTime::RFC2822 . '+', $overview->date);
                if ($msgdate !== false && $msgdate < $deldate) {
                     imap_delete($mbox,$overview->msgno);
                     echo " [Mark Del]";
                }

                echo "\n";
            }
        } else {
            echo "imap_fetch_overview failed: " . imap_last_error() . "\n";
        }

        echo "Expunging all messages marked for deletion... ";
        echo (imap_expunge($mbox) ? "OK" : "FAILED") . "\n";
    }
} else {
    echo "imap_getmailboxes failed: " . imap_last_error() . "\n";
}

imap_close($mbox);
echo "=================== Completed ===================\n";
?>