connect_error) { die("Connection failed: " . $conn->connect_error); } $sensor_type_select = isset($_REQUEST['sensor_type_select']) ? $_REQUEST['sensor_type_select'] : ''; $sql = "SELECT value FROM sensors_system WHERE name = 'server_hostname'"; $result = $conn->query($sql); if ($result->num_rows > 0) { while($row = $result->fetch_assoc()) { echo "