<?php

header('Content-Type: application/json');
require_once "api.php";
session_start();
if (!empty($_POST)) {
    if (isset($_POST['regName']) && isset($_POST['regSurname']) && isset($_POST['regAddress']) && isset($_POST['regEmail']) && isset($_POST['regPwd']) && isset($_POST['regPwd2'])) {
        $name = $_POST['regName'];
        $surname = $_POST['regSurname'];
        $address = $_POST['regAddress'];
        $email = $_POST['regEmail'];
        $pwd = $_POST['regPwd'];
        $pwd2 = $_POST['regPwd2'];
        $isDataCorrect = User::userCheckForCorrectData($name, $surname, $email, $address);
        if ($isDataCorrect == true && $pwd == $pwd2) {
            $user = User::register($name, $surname, $email, $pwd, $address);
            $userId = $user->getUserId();
            $arr = $user->getUsers($userId);
        }
        echo json_encode($arr);
    }
    if (isset($_POST['loginEmail']) && isset($_POST['loginPassword'])) {
        $email = $_POST['loginEmail'];
        $password = $_POST['loginPassword'];
        $user = User::login($email, $password);
        $userId = $user->getUserId();
        $_SESSION['userId'] = $userId;
    }
    if (isset($_POST['killUser']) && $_POST['killUser'] == true) {
        unset($_SESSION['userId']);
    }
<?php

require_once 'api/api.php';
session_start();
if (isset($_SESSION['user']) == true) {
    header('location: ./main');
}
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    // sprawdzam czy uzytkownik wpisal poprawne dane
    $dataCheck = User::userCheckForCorrectData($_POST['name'], $_POST['surname'], $_POST['email'], $_POST['address']);
    // jesli wpisal to go rejestruje i przekierowuje na strone glowna a jesli nie to wyskakuje komunikat z bledem
    if ($dataCheck == true) {
        $newUser = User::register($_POST['name'], $_POST['surname'], $_POST['email'], $_POST['password'], $_POST['password2'], $_POST['address']);
        if ($newUser != false) {
            $_SESSION['user'] = $newUser;
            header('location: ./main');
        }
    }
    echo "Error during registration process";
}
?>

<!DOCTYPE html>
<html lang="pl-PL">
<head>
  <meta charset="UTF-8">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.4.0/css/font-awesome.min.css">
  <link href='https://fonts.googleapis.com/css?family=Raleway:500' rel='stylesheet' type='text/css'>
  <style type="text/css">
    body {