getTemperature.php

<?php
header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');

$servername = "localhost";
$username = "root";  // Update if your username is different
$password = "";      // Update with your MySQL password
$dbname = "test_aeroscan_db";

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

if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT * FROM temperature";
$result = $conn->query($sql);

$data = [];
if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        $data[] = $row;
    }
}

echo json_encode($data);
$conn->close();
?>