koneksi.php

<?php
$host = "localhost";
$user = "root";
$pass = "";
$dbname = "arduinophpmysql";

$koneksi=mysqli_connect($host,$user,$pass);
$pilihdb= mysqli_select_db($dbname);

if ($koneksi) {
    echo "koneksi berhasil";
} else {
    echo "koneksi gagal";
}
?>