login

<php?
	if(isset($_POST["dangnhap"])){
			$tk = $_POST["user_name_lg"];
			$mk = md5($_POST["passlg"]);
			$rows = mysqli_query($connect,"
				select * from user where user_name = '$tk' and password = '$mk'
			");
			$count = mysqli_num_rows($rows);
			if($count==1){
				$result = mysqli_query($connect,"
				select * from user where user_name = '$tk' and password = '$mk'
			");
				$row = mysqli_fetch_assoc($result);
				$_SESSION['score'] = $row['score_max'];
				$_SESSION['name'] = $_POST["user_name_lg"];
				$_SESSION['pass']= md5($_POST["passlg"]);
				$_SESSION["loged"] = true;
				header("location:index.php");
			}
			else{
				header("location:index.php");
				setcookie("error", "Đăng nhập không thành công!", time()+1, "/","", 0);
			}

		}
	?>