real_escape_string($_GET['name']); $password = $conn->real_escape_string($_GET['password']); if ($username == '' || $password == '') { echo "Supply values for all required fields"; return; } $sql = "SELECT id FROM users WHERE username = '$username' AND password = '$password'"; $result = $conn->query($sql); if ($result->num_rows == 1) { $data = $result->fetch_assoc(); echo $data['id']; } else { echo "Error while logging in user " . $conn->error; } $conn->close(); ?>