Sistem Durasi

<?
include('footer.php');
else:
/*
* Code By Haqyn
* Recode By Grinaldi
* 22-10-2016
* Thanks
*/
    $drs = trim($_POST['durasi']);
    if($drs==1)
        $dr=3;
    else if($drs==2)
        $dr=7;
    else if($drs==3)
        $dr=14;
    else
        $dr=30;

    $now = strtotime(date("Y-m-d"));
    $date = date('Y-m-j', strtotime($dr.' day', $now));
    $hw=mysql_query("select username from members where username='".trim($_POST['username'])."'");
    if(mysql_num_rows($hw)>0)
        die(json_encode(array('result' => 0, 'content' => 'User telah didaftarkan sebelumnya..')));
    mysql_query("insert into members values ('".trim($_POST['username'])."','".trim($_POST['password'])."','member','".date('d/m/Y H:i:s')."','".$date."');");
    print json_encode(array('result' => 1, 'content' => 'User Berhasil Didaftarkan.<br> Username : '.trim($_POST['username']).'<br>Password : '.trim($_POST['password']).'<br>Durasi : '.$dr.' Hari'));
endif;
}   ?>