$sql="select * from table where id_laporan=1";
$q=$mysqli->query($sql);
    if(!$q)
    {
        die($sql);
    }


    while ($r = $q->fetch_assoc())
    {
        $id=$r[rayon];
        $a[$id]=array($r[jan], $r[feb],$r[mar],$r[april]);


    }

    $p=json_encode;