<?php

session_start();

$username = $_POST['username'];
$password = $_POST['password'];
$confirmpwd = $_POST['confirmpwd'];

$servername = '127.0.0.1';
$loginusername = '';
$loginpassword = 'notdoingthatagain';
$dbname = '';

if ($username && $password && $confirmpwd) {

    if ($password == $confirmpwd) {
        $connect = new mysqli($servername, $loginusername, $loginpassword, $dbname);

        if ($connect->connect_error) {
            die("Connection failed: " . $conn->connect_error);
        }

        $query = "INSERT INTO user (username, password) VALUES ('$username', '$password')";

        $result = $connect->query($query);

        echo $result;
    } else {
        echo "Confirm password did not match...";
    }
} else {
    echo "Please fill in all the fields...";
}

?>