if(isset($_POST['submit'])){


$lastname = $_POST['lastname'];
$firstname = $_POST['firstname'];
$adress=$_POST['adress'];
$tel=$_POST['tel'];
$username=$_POST['username'];
$password=$_POST['password'];
$email=$_POST['email'];


$columns='';
$values='';

foreach ($_POST as $key=>$value){
    $columns.=$key.',';
    $columns = trim(',',$columns);

}


$sql = "INSERT INTO register ($columns) VALUES ($values)";


if ($conn->query($sql) === TRUE) {
    echo "New record created successfully";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}

}