[SOLVED] set a session when you use header redirect?

[aebstract]

I have a

 

header("Location: login.php");

exit;

 

throughout several pages of my website, for various reasons and whatnot. Is there a way to set a session whenever that header is activated? Or will I have to go and edit the code everywhere that is found?

[ram4nd]

Well if the header is activted then it redirects you to login.php, so you have to put the code there.

[aebstract]

Yeah I was just wondering if there was something I could do maybe in .htaccess or something similar to run a short script and set a session whenever a specific header is activated.

[ram4nd]

What are you planning to do, i am sure that there is easyer way to do that.

[aebstract]

Certain pages are protected so that if you aren't logged in, it sends you to the login page. After logging in, I'd like to go to the page that was trying to be accessed. You're right that there probably is an easier way.

[premiso]

You can, create an "overrided" header function. Just make sure you put this in a file that is included in every page:

 

function header_($header, $setPage=true) {
     if ($setPage) 
         $_SESSION['last_page'] = $_SERVER['PHP_SELF'];

     header($header);

     return true;
}

 

Then just use that, which it should set the session variable and viola.

[aebstract]

That is checking to see if the header is being ran, period. Right? I'm gonna need something a tad more specific, if the header being ran is header("Location: index.php?page=login");

 

So I'm gonna need something like

 

function header_(Location: index.php?page=login, $setPage=true) {
     if ($setPage) 
         $_SESSION['last_page'] = $_SERVER['PHP_SELF'];

     header(Location: index.php?page=login);

     return true;
}

? Or I'm not sure I understand it

[blintas]

Hey There,

 

You can use the function ob_start(); at the beginning of your script, then you can set the session and then run the redirect

 

<?php
ob_start();
session_start();
header("location: url");
?>

 

Hope that helps!

[premiso]

? Or I'm not sure I understand it

 

Let me explain with an example.

 

function header_($header, $setPage=true) {
     if ($setPage) 
         $_SESSION['last_page'] = $_SERVER['PHP_SELF'];

     header($header);

     return true;
}

 

That is added in some file that is included.

 

<?php
session_start();
include('functions.php'); // has our header function.

if (!$_SESSION['loggedin']) {
    header_("Location: index.php?page=login");
}
?>

 

Simple as that, now the session contains ['last_page'] in it, the user is redirected where you want them to be and you can then redirect them (with or without using header_) to the page they were trying to access.

 

[aebstract]

Whenever I try and echo that session variable out it says:

Notice: Undefined index: last_page in /home/virtual/site21/fst/var/www/html/performance/login.php on line 13

[aebstract]

*bump

[premiso]

Are you checking if it is set first?

 

Is that header_ being called before you try and call that session variable? If not, then this would not work.

 

You also have to have session_start at the top of the page where you set/try and retrieve this variable at.

[aebstract]

session_start() is the first line in my index page so it should be included in to every other page as well, as first thing. I set the variable and then try and call it on the next page. Hence it being a variable to see the past page. =/

 

[trq]

Can we see some relevent code. Were just playing a guessing game at the moment.

[premiso]

Ok so it is set on the index page. how about the page that is being called? Is this a separate page or does it use the index page as a gateway?

 

session_start has to be at the top of any page you want to use sessions on. 

 

EDIT:

And yes, please do as Thorpe suggested

[laffin]

well ya can make that whole process easier, just work on the idea of how it shud run.

It sounds like u have some pages ya want to protect, and others are public.

well than ya needs a way to let yer script know which pages are what.

 

file: protect.php

<?php
session_start();
if(!isset($_SESSION['loggedin']) && !defined(PROTECTED))
{
   $_SESSION['last_page'=$_SERVER['PHP_SELF']
   header("Location: login.php");
   exit;
}

 

file: unprotected.php

<?php
// Sample Unprotected Page
?>
<H1>UnProtected</H1>

include("inlcude.php");

[/code]

 

file: protected.php

<?php
define('PROTECTED',TRUE);
include("inlcude.php");
?>
<H1>Protected</H1>

 

 

good luck

 

[aebstract]

all other pages are included in to index.

 

heres an example, products page:

<?php
if(!isset($_SESSION["id"]))
{
header("Location: index.php?page=login");
exit;
}

 

 

 

 

 

login.php

<?php
ini_set ("display_errors", "1");
error_reporting(E_ALL);
header("Cache-control: private");
if(isset($_SESSION["id"]))
{
header("Location: index.php?page=myaccount");
exit;
}

$error = "";

echo "$_SESSION[last_page]";

 

 

 

index.php

<?php
session_start();
header("Cache-control: private");

require_once('functions.php');

$content = '';

 

 

These are really the only bits that matter, the function is in functions.php

[premiso]

<?php
ini_set ("display_errors", "1");
error_reporting(E_ALL);
session_start(); // Note session_start added here
header("Cache-control: private");
if(isset($_SESSION["id"]))
{
header("Location: index.php?page=myaccount");
exit;
}

$error = "";

echo "{$_SESSION['last_page']}";

 

<?php
session_start();  // note session_start here as well.
if(!isset($_SESSION["id"]))
{
header("Location: index.php?page=login");
exit;
}

[trq]

I don't see anywhere where you actually call this function that sets $_SESSION['last_page'].

[aebstract]

thorpe, the function that was made earlier in this forum is the one used within functions.php which you can see is included in to index.php

 

premiso, I understand it needs to be at the top, but the function that creates the session isn't on the login page, its in functions.php which is simple a php file of functions created. Needs to go top of that page?

 

[aebstract]

I placed session_start() at the top of both my login page and my functions page and doesn't give me anything except for:

Notice: Undefined index: last_page in /home/virtual/site21/fst/var/www/html/performance/login.php on line 14

[aebstract]

Okay just figured out that this won't work:

 

function header_($header, $setPage=true) {
     if ($setPage)

header("Location: index.php?page=thisworks");

     return true;
}

 

I still go to page=login, whenever I use just that. Like I said before, I don't understand exactly what's going on in this so it's hard for me to really troubleshoot that function.

[trq]

thorpe, the function that was made earlier in this forum is the one used within functions.php which you can see is included in to index.php

 

That may be so, but Its still not being called anywhere?

[aebstract]

inside functions.php:

function header_($header, $setPage=true) {
     if ($setPage)
header("Location: index.php?page=thisworks");
         $_SESSION['last_page'] = $_SERVER['PHP_SELF'];
$_SESSION['count_last_page'] = 1;
     header($header);

     return true;
}

 

 

inside index.php:

<?php
session_start();
header("Cache-control: private");

require_once('functions.php');

 

The functions is pulled in at the top of the index..

[premiso]

He means where are you calling: "header_"  not just "header"

 

You have posted where you defined it. It has to be called.

 

<?php
session_start();  // note session_start here as well.
if(!isset($_SESSION["id"]))
{
header_("Location: index.php?page=login"); // note it is now header_ instead of header
exit;
}

 

Functions have to be called to actually run. You cannot just define them and expect them to run on their own.