//ckeck connection

    if (mysqli_connect_errno()){
        echo "1 connection failed"; // error code number 1 = connection failed
        exit();
    }

   $username = $_POST["name"];
    $password = $_POST["password"];

    $namecheckquery = "SELECT username, score, hash, salt FROM users WHERE username = '$username'";

    $namecheck = mysqli_query($con, $namecheckquery) or die("2: name check query failed"); // error code #2 = name check query failed

    var_dump($namecheck);
    if(mysqli_num_rows($namecheck) !=1)
    {
    echo "5: Either no user with name, more than one."; //error code number 5 number names does not match one

        exit();

    }

    // get login info from query
    $existinginfo=mysqli_fetch_assoc($namecheck);

    //$salt = $existinginfo["salt"];
    //$hash = $existinginfo["hash"];

    $salt = trim($existinginfo["salt"]);
    $hash = trim($existinginfo["hash"]);

    $loginhash = crypt($password, $salt);
    if ($hash != $loginhash)
    {
        echo "6: Incorrect password"; // error code number 6 password does not hash to match table
        exit();
    }

echo "0/t" .$existinginfo["score"];