Redirecting to Previous Page After Login - PHP

Redirecting to previous page after login?

A common way to do this is to pass the user's current page to the Login form via a $_GET variable.

For example: if you are reading an Article, and you want to leave a comment. The URL for comments is comment.php?articleid=17. While comment.php is loading, it notices that you are not logged in. It wants to send you to login.php, like you showed earlier. However, we're going to change your script so that is also tells the login page to remember where you are:

header("Location:login.php?location=" . urlencode($_SERVER['REQUEST_URI']));
// Note: $_SERVER['REQUEST_URI'] is your current page

This should send the user to: login.php?location=comment.php%3Farticleid%3D17. login.php should now check to see if $_GET['location'] is populated. If it is populated, then send the user to this location (in this case, comment.php?articleid=17). For example:

//  login.php
echo '<input type="hidden" name="location" value="';
if(isset($_GET['location'])) {
    echo htmlspecialchars($_GET['location']);
}
echo '" />';
//  Will show something like this:
//  <input type="hidden" name="location" value="comment.php?articleid=17" />

 

//  login-check.php
session_start();

//  our url is now stored as $_POST['location'] (posted from login.php). If it's blank, let's ignore it. Otherwise, let's do something with it.
$redirect = NULL;
if($_POST['location'] != '') {
    $redirect = $_POST['location'];
}

if((empty($username) OR empty($password) AND !isset($_SESSION['id_login']))) {
    $url = 'login.php?p=1';
    // if we have a redirect URL, pass it back to login.php so we don't forget it
    if(isset($redirect)) {
        $url .= '&location=' . urlencode($redirect);
    }
   header("Location: " . $url);
   exit();
}
elseif (!user_exists($username,$password) AND !isset($_SESSION['id_login'])) {
    $url = 'login.php?p=2';
    if(isset($redirect)) {
        $url .= '&location=' . urlencode($redirect);
    }
   header("Location:" . $url);
   exit();
}
elseif(isset($_SESSION['id_login'])) {
    // if login is successful and there is a redirect address, send the user directly there
    if($redirect) {
        header("Location:". $redirect);
    } else {
        header("Location:login.php?p=3");
    }
    exit();
}

Gotchas

You should run some validation against $_GET['location'] before sending the user there. For example, if I tell people who use your site to click on this link: login.php?location=http%3A%2F%2Fmalice.com%2Fevilpage.php... then they will be sent to a foreign URL that will try to do something bad.

Always make sure to use urlencode when passing URLs as $_GET parameters. This encodes special URL characters (such as ?, &, and %) so that they don't break your url (e.g.: login.php?location=comment.php?id=17 <- this has two ?'s and will not work correctly)

redirect user to previous page after login

You can store url inside a session may, $_SESSION['visited_page'] inside header. Every time user visit different url this session value updated. During logout, you can assign url inside $_SESSION['visited_page'] to $_SESSION['last_visited'] and unset $_SESSION['visited_page']. Now you have the url user last visit. I hope you get my point.

Redirect to the last page requested after login

I think you should try HTTP_REFERER here to redirect on last visited page. for that set a hidden field in your login form.

HTML :-

<input type="hidden" name="redirurl" value="<? echo $_SERVER['HTTP_REFERER']; ?>" />

and get redirurl value in form post.

PHP :-

if(isset($_REQUEST['redirurl'])) 
   $url = $_REQUEST['redirurl']; // holds url for last page visited.
else 
   $url = "student_account.php"; // default page for 

header("Location:$url");

Or if you are using session then please ensure that you start session session_start() on that page. otherwise session will break and it couldn't save your desired URL.

How to go back to previous page after successful login

In the previous page

add these:

session_start();
require_once("./include/membersite_config.php");
if (!$fgmembersite->CheckLogin())
{
    $_SESSION['redirect_url'] = $_SERVER['PHP_SELF']; 
    header('Location: login.php');
    exit;
}

login page

    session_start();

    require_once("./include/membersite_config.php");

    if(isset($_POST['submitted']))
    {
        if($fgmembersite->Login())
        {
            $redirect_url = (isset($_SESSION['redirect_url'])) ? $_SESSION['redirect_url'] : '/';
            unset($_SESSION['redirect_url']);
            header("Location: $redirect_url", true, 303);
            exit;
        }
    }

Redirecting back after login in PHP

Just try to give some example here:

originating_page.php

if(!is_admin) {
    $_SESSION["originatingpage"] = $_SERVER["HTTP_HOST"].$_SERVER["REQUEST_URI"];
    header('Location: http://'.$_SERVER["HTTP_HOST"].'/login.php');
  }
}

login.php

if(is_admin_success_login) {
  if (isset($_SESSION["originatingpage"])) {
    $originatingpage = $_SESSION["originatingpage"];
    unset($_SESSION["originatingpage"]);
    header('Location: http://'.$originatingpage);
  } else {
    //do another default action
  } 
}

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