<?php
$x=$_POST['firstname'];
$y=$_POST['lastname'];
$servername = "localhost";
$username = "root";
$password = "";
$dbname="db1";
// Create connection
$conn = new mysqli ($servername, $username, $dbname);

//Check connection
if ($conn->connect_error  {
	die("Connection failed: " . $conn->connect_error);
}
echo "Connected succesfully";
$sql = "INSERT INTO 'user' (`fname`, `lname`) VALUES ('$x',' $y')";

if ($conn->quert($sq1) === TRUE) {
	echo "New record created succesfully";
} else {
	echo "Error: " . $sq1 . "<br>" . $conn->error;
}

$conn->close();
?>