loggin fout

dit is mijnlogin verwerking maar hij registreert niet waarom?
<?php
session_start();
if (!empty($_POST)){
include('db.php');
$query = "SELECT * FROM members WHERE email='" . $_POST["email"] ."'
AND password='". $_POST["password"] . "'";
$result = mysql_query($query) or die("FOUT : " . mysql_error());
if (mysql_num_rows($result) > 0){
$email= $_POST["email"];
$password= $_POST["password"];
session_register("email");
session_register("password");
header("location: memberpage.php");
exit();
}else{
$tekst = " youre username/password are rong. If you feel like youre account has been taken over.Contact darksniper";
die($tekst);
}
}else{header("location: index.php");
}
?>