if($_SERVER["REQUEST_METHOD"] == "POST") {

      $myusername = mysqli_real_escape_string($db,$_POST['email']);
      $mypassword = md5 (mysqli_real_escape_string($db,$_POST['password']));

      $sql = "SELECT id FROM users WHERE email = '$myusername' and password = '$mypassword'";
      $result = mysqli_query($db,$sql);
      $row = mysqli_fetch_array($result,MYSQLI_ASSOC);
      $active = $row['active'];

      $count = mysqli_num_rows($result);

      if($count == 1) {
         $_SESSION['login_user'] = $myusername;

         header("location: dashboard.php");
          echo "test";
      }else {
         $error = "Your Login Name or Password is invalid!";
          echo $error;
      }
    }