how to go to make auto go back to previous page after login?

[lukelee]

I want to make a function: after you login, it auto go back to the previous page, does anyone know how to write the code?

[MadTechie]

Its hard to say without knowing the code behind it but the basic concept is as follows

 

On the page that redirects you to the login page save the URL in a session ie 'ePage'.. then on login if 'ePage' is set redirect to it

[lukelee]

Its hard to say without knowing the code behind it but the basic concept is as follows

 

On the page that redirects you to the login page save the URL in a session ie 'ePage'.. then on login if 'ePage' is set redirect to it

 

here is my code:

<?php
session_start();

session_destroy();

$Login=$_POST['Login'];
if($Login){
$username=$_POST['username'];
$password=$_POST['password']; 

require_once('db.php');

$result=mysql_query("select * from member where username='$username' and password='$password'");
if(mysql_num_rows($result)!='0'){
session_register("username"); 
header("index.php");
exit;
}else{ 
echo "Wrong username and password, back in 3 sec!";
}

} 
?>
<meta http-equiv="Refresh" content="3; URL=index.php" >

 

if the user is invalid, go to index.php, but if the user is valid, go to the previous page, I have login from in every page, so is there any codes to let you go back 1 page?

[gevans]

What I do is in my main include file (included on everypage) save a cookie of the current page url. Pages such as register and login/logout don't update the cookie (as you don't want to redirect them to login after login )

 

After registration/login/logout my header points at the cookie if it's set or index if it's not.

 

Hope that's useful.

[MadTechie]

Okay update the code to the below

 

$result=mysql_query("select * from member where username='$username' and password='$password'");
if(mysql_num_rows($result)!='0'){
session_register("username"); 
$page = (!empty($_SESSION['gPage']))?$_SESSION['gPage']:"index.php";//add
header($page); //update
exit;
}else{ 
echo "Wrong username and password, back in 3 sec!";
}

(you could use $_COOKIE instead of $_SESSION

 

and add

<?php
session_start();
$_SESSION['gPage'] = $_SERVER['REQUEST_URI'];
?>

at the top of your pages

(

you could use

<?php
setcookie("gPage", $_SERVER['REQUEST_URI']); 
?>

instead

)

[lukelee]

no, it doesnt work, and also i dont understand what is $page = (!empty($_SESSION['gPage']))?$_SESSION['gPage']:"index.php"; why do we put index.php here?

[lukelee]

I have made it,

I put $htmpage=$_SERVER['HTTP_REFERER']; at the top, then <meta HTTP-EQUIV="REFRESH" CONTENT="3;URL=<? echo $htmpage; ?>">

 

thanks guys

[gevans]

You might find that that causes a problem if there's a failed login attempt. As it will re-load login.php and the referer will be the same page. Just so that you're aware

[MadTechie]

no, it doesnt work, and also i dont understand what is $page = (!empty($_SESSION['gPage']))?$_SESSION['gPage']:"index.php"; why do we put index.php here?

 

If $_SESSION['gPage'] is empty goto index.php instead..

type in the URL of the login page directly into the address bar and then login.. what happens!

 

Oh what didn't work ? and i should of said don't add

<?php
session_start();
$_SESSION['gPage'] = $_SERVER['REQUEST_URI'];
?>

to the login page!