$name   =   $_POST['name'];
    $pass   =   $_POST['pass'];

    $name = stripslashes($name);
    $pass = stripslashes($pass);
    $name = mysqli_real_escape_string($db, $name);
    $pass = mysqli_real_escape_string($db, $pass);

    $pass = //hier ist dann halt die verschlüsselung

    $sql = "SELECT * FROM ".$table_users." WHERE user='".$name."' and pass='".$pass."' LIMIT 1";

    echo $sql;

    $result = mysqli_query($db, $sql);

    //$count = mysqli_num_rows($result);

    if ($count == 1) {

        $row = mysqli_fetch_array($result);

        $activated = $row['activated'];
        echo $row['activated'];

        if ($activated == 1) {
            //..
        }
    }