<?php
if (isset($_POST['btnok'])) {
    $login = $_POST['login'];
    $password = $_POST['password'];
    mysql_connect('localhost','root','root');
echo "2";
mysql_select_db('hack');
echo "3";
    $login = $_POST['login'];
    $password = $_POST['password'];

    $re = mysql_query("select * from users where login = '$login' and password = '$password'");
echo "re :";
echo $re;
    if(mysql_num_rows($re) != 0){
        $temps = 365*24*3600;
        setcookie ("credentials", $login.":".$password, time() + $temps);
        header('Location: ./home.php');
    } else {
        $_SESSION['error'] = true;
        header('Location: ./login.php');
    }
}
?>