<?php
header('Content-type: application/json');

$servername = "localhost";
$username = "username";
$password = "secret";
$dbname = "arduinoData";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
     die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT  timeStamp, out_temperature, out_humidity FROM sensorLog ORDER BY timeStamp DESC LIMIT 1";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
     // output data of each row
     while($row = $result->fetch_assoc()) {
         echo "<br>Time: ". $row["timeStamp"]. "<br>Temperature: ". $row["out_temperature"]. "<br>Humidity: " . $row["out_humidity"] . "<$
     }
} else {
     echo "0 results";
}

$conn->close();
?>