$fname = $_REQUEST['fname'];
$fname1 = $_REQUEST['fname1'];
$fname2 = $ip=$_SERVER['REMOTE_ADDR'];
$fname3 = $_GET['id'];
$fname4 = date('Y/m/d H:i:s');
try {
    $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    $sql = "INSERT INTO db (usern, passwd, ip, id, date)
    VALUES ('$fname', '$fname1', '$fname2', '$fname3', '$fname4')";
    // use exec() because no results are returned
    $conn->exec($sql);