Remember visitor PHP

Question

I develop website and want to remember visitor already vote for my site like this website.

After i research, evercookie is a method to remember visitor.

In the website they protect only once they can vote on a song, even they clear standard cookie, use others browser...

Question: Can it's have other methods to remember beside of evercookie?

evercookie, more like lawsuitcookie. bad, bad, bad practices tend to spread fast. — Sharky, Apr 28 '14 at 09:36
*Its goal is to identify a client even after they've removed standard cookies, Flash cookies (Local Shared Objects or LSOs), and others.* Selling fake Viagra or something? — Álvaro González, Apr 28 '14 at 09:38
There is no way to prevent people from voting more than once. If somebody wants to do it he can circumvent everything you try to prevent it. — Gerald Schneider, Apr 28 '14 at 09:39
@Gerald Schneider, the website is allow only once for a song even you delete standard cookie or use difference browser to vote — Chandara Sam, Apr 28 '14 at 09:49
@ChandaraSam And I just voted multiple times for the same entry using tor. — Gerald Schneider, Apr 28 '14 at 09:59

score 2 · Answer 1 · answered Apr 28 '14 at 09:37

2

A simple method, store a session variable.
On top of page:

<?php
session_start();
$_SESSION['hasVoted'] = "No";
?>

then in youre code:

<?php
   if( $_SESSION['hasVoted'] == "No")
     {
        $_SESSION['hasVoted'] = "Yes"; 

        //Here goes youre code for submitting the vote.
     }
?>

The downside: when session has been lost, the user can vote again.
Another way is by using a database to store the users IP adress.

using $_SERVER['REMOTE_ADDR'] you can get the viewers ip adress and store that in your DataBase.

Hope this helps.

answered Apr 28 '14 at 09:37

Nick Prozee

2,823
4
22
49

$_SERVER['REMOTE_ADDR'] show the same IP on the same network even on difference computer – Chandara Sam Apr 28 '14 at 09:46
Yes, there is a downside to them, but if you want to avoid using cookies then those are a workaround. – Nick Prozee Apr 28 '14 at 09:50
You could also force people to create a account first – Nick Prozee Apr 28 '14 at 09:51
make visitor friendly, and it just a vote no need them to register – Chandara Sam Apr 28 '14 at 09:53
Then you should use a cookie, but still, if they clear all browser data and cookies. They can vote again. Without a login its hard to register since we cannot get Mac Adresses from the computer. I advise you to use the Session. If the answer above is what you are looking for, Please mark as answer – Nick Prozee Apr 28 '14 at 11:20

Remember visitor PHP

1 Answers1