$sala = $_POST['sala'];

    $servername = "";
    $username = "";
    $password = "";
    $dbname = "";

    // Create connection
    $conn = new mysqli($servername, $username, $password, $dbname);

    // Check connection
    if ($conn->connect_error) {
        die("Connection failed: " . $conn->connect_error);
    } else{
        echo "Polaczono";
    }

    $sql = "INSERT INTO instructions (hash, sala)
    VALUES ('$newfilename', '$sala')";

    if ($conn->query($sql) === TRUE) {
        echo "Dane dodano prawidłowo";
    } else {
        echo "Error: " . $sql . "<br>" . $conn->error;
    }

    $conn->close();