<?php
$servername = "localhost"; // usually "localhost"
$username_db = "temperature_user";        // your MySQL username
$password_db = "secure_password_123";            // your MySQL password
$dbname = "temperature_db";   // your database name

// Create connection
$conn = new mysqli($servername, $username_db, $password_db, $dbname);

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