///connect.php
<?php

	$host = "localhost";
	$db_user = "root";
	$db_password = "";
	$db_name = "moviedb"

?>

require_once "connect.php";

	$polaczenie = @new mysqli($host, $db_user, $db_password, $db_name);

	if ($polaczenie->connect_errno!=0)
	{
		echo "Error: ".$polaczenie->connect_errno;
	}
	else
	{
		$login = $_POST['login'];
		$haslo = $_POST['haslo'];

		$login = htmlentities($login, ENT_QUOTES, "UTF-8");

		if ($rezultat = @$polaczenie->query(
		sprintf("SELECT * FROM uzytkownicy WHERE user='%s'",
		mysqli_real_escape_string($polaczenie,$login))))
		{
			$ilu_userow = $rezultat->num_rows;
			if($ilu_userow>0)
			{
				$wiersz = $rezultat->fetch_assoc();
				if (password_verify($haslo, $wiersz['pass']))
				{
				$_SESSION['zalogowany'] = true;
				$_SESSION['id'] = $wiersz['id'];
				$_SESSION['user'] = $wiersz['user'];
			}