<?php
header('Content-Type: application/json; charset=utf-8');
$connect = '';
function checkUser($method)
{
    // global $connect;
    $response = [
        'status' => 0,
        'message' => ''
    ];
    $headers = getallheaders();
    // https://stackoverflow.com/questions/53610622/what-does-double-question-mark-operator-mean-in-php
    $type   = $headers['Type'] ?? null;
    $id     = $headers["Device"] ?? null;

    // jika $type atau $id == null
    // return false
    if (!$type || !$id) {
        $response['message'] = 'id and type can not be blank';
        return json_encode($response);
    }

    // jika $type ==mercu
    if ($type == 'Mercu') {
        $headers["User-Agent"] == $headers["Device"];
        $datas = null; // inisiasi karena data line 24 blm di define
        $sql = "SELECT * FROM member where Device = $id";
        // $result = $connect->query($sql);
        // while ($row = mysqli_fetch_object($result)) {
        for ($x = 1; $x <= 10; $x++) {
            $row = new stdClass;
            $row->xxx = 'qwerty ' . $x;
            $datas[] = [
                'Mercu' => $row->xxx,
                'Admin' => $row->xxx,
                'Expired' => $row->xxx,
                'Message' => $row->xxx,
            ];
        }
        // }
        // $data = ['ok'];
        if (!$datas) {
            $response['message'] = 'No data to display';
            return json_encode($response);
        }
        // anggap lah column di member isi nya
        // id,name,expired_date,created_date
        // [{"Mercu":"12345","Admin":"@KopiNih","Expired":"15-12-2021","Message":"Mercu"}]}
        $response['status'] = 1;
        $response['data'] = $datas;
        return json_encode($response);
    }

    // return false
    // jika $type != mercu
    $response['message'] = 'invalid type';
    return json_encode($response);
}

echo checkUser('get');