//fetch_data2
<?php
$servername = "localhost";
$username = "root";
$password = "devbas2603";
$dbname = "tugas_akhir";
$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT voltage, power, current, energy, timestamp FROM sensor_reference1 ORDER BY id DESC LIMIT 1"; 
$result = $conn->query($sql);
$data = array();
if ($result->num_rows > 0) {
// Output data of each row
while ($row = $result->fetch_assoc()) {
$data = array(
'voltage' => $row['voltage'],
'current' => $row['current'],
'power' => $row['power'],
'energy' => $row['energy']
);
}
}
$conn->close();
header('Content-Type: application/json');
echo json_encode($data);
?>

//fetch_data2
<?php
$servername = "localhost";
$username = "root";
$password = "devbas2603";
$dbname = "tugas_akhir";
$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "SELECT saldo, biaya, timestamp FROM biaya_reference ORDER BY id DESC LIMIT 1"; 
$result = $conn->query($sql);
$data = array();
if ($result->num_rows > 0) {
while ($row = $result->fetch_assoc()) {
$data = array(
'saldo' => $row['saldo'],
'biaya' => $row['biaya']
);
}
}
$conn->close();
header('Content-Type: application/json');
echo json_encode($data);
?>