Question

Redirect after successful login to referring page

Asked by: lunchboxbill

Hi,

Some of my pages are restricted to members only, so if the user is not logged in they are redirected to the login page. Once login has been successfull I want them to go to the page they were intially searching for.

Example for advanced search page (1 of 3 pages like this):

// Beginning of script

 if (no session)
 {
 go to login page
 $variable = search
 exit()
 }



// Login script

  if (user login ok)
 {
    if ($variable = search)
    {
      include('search.php');
      exit();
    }

    if ($variable = account)
    {
      include('account.php');
      exit();
    }
 }

This always picks up the first if statement, in this case it always takes me to the search page, no matter what the variable value is.

I have also tried it with the reffering page url (a $_SERVER variable) instead of the $variable but with the same effect.

Any ideas??

If i dont fix it the user will just have to be redirected to the home page and they will have to start again - but this time logged in.

Usability is a key factor in my site and ideally i want the experience to be a s simple as poss for the user.

Many thanks.

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Asked On
2004-02-18 at 09:53:38ID20889577
Tags

redirect

,

page

,

login

,

referring

,

after

Topic

PHP Scripting Language

Participating Experts
5
Points
125
Comments
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Answers

 

by: andrivPosted on 2004-02-18 at 11:14:20ID: 10395638

You need to use equal signs in if statements:

($variable == search)

One equal sign is for assigning value and two is to compare.

 

by: gr8gonzoPosted on 2004-02-18 at 11:15:44ID: 10395650

When you say "this always picks up the first if statement" do you mean the if statement that checks for the session and redirects to the login or the variable = search?

Keep in mind that if you say:

if($variable = "search")

then it will ALWAYS equal search because one = sign means "assignment" while two equals signs == is for comparison. In other words:

$variable = "search" assigns the value of "search" to $variable.
$variable == "search" is a check to see if variable is equal to search, and if so, it returns true, otherwise if it is not equal, it returns false.

so you'll want to say:
if($variable == "search")

But then again, I'm not sure if this is the first "if" statement you're talking about, since technically it's the third.

- Jonathan

 

by: lunchboxbillPosted on 2004-02-18 at 11:23:30ID: 10395727

sorry for the confusion

I do use == for comparison

and i the if i mean is techincaly the 3rd if ( i meant the first if with in the if )

:|

but it still only ever picks up the value of the 'third if', and never the 4th or 5th, if it is meant to be them assigned.

Hope this clears things up!

 

by: gr8gonzoPosted on 2004-02-18 at 11:29:39ID: 10395792

Change:

  if (user login ok)
   {
      if ($variable = search)

to:

  if (user login ok)
   {
      die($variable);
      if ($variable = search)

... and see what value it gives you. If it's always "search" no matter what setting you try, then you should check the PHP code above that section to see if there's any place where $variable could get re-assigned a value. If not, then check your form code to make sure you're submitting the value correctly. If it helps, post your form code and your full PHP code.

 

by: majorspankPosted on 2004-02-18 at 15:31:53ID: 10398203

You could always just pass the $_SERVER["REQUEST_URI"] to the login page as a variable, then when the are authorized redirect them to the page.

 

by: lunchboxbillPosted on 2004-02-19 at 02:44:34ID: 10401119

I have tried a number of suggested ways and all to the same result.

At the start of my search page i have the code:

if(!$_SESSION['forename'])
{       
      $message = "Please log in to access the advanced search facility.<br><br>";
      include ('account.php');
      exit();
}

The user is not logged in and so redirected to the log in page (account.php).

When the user has been verified I attempt to then redirect them to the page they were looking for

     $referal = $_SERVER["REQUEST_URI"];
     echo "$referal"; //      just to test            
     include ('$referal');  
     exit();

I always get login.php (the login script) as the referal page, not search.php. I have tried declaring the variable also at the beginning of the file, and also in the search.php file.

I can provide the files it it would help, but there is a lot of code for this window really!

Thanks.
      

 

by: andrivPosted on 2004-02-19 at 07:37:06ID: 10403380

Open up your php.ini file and see what you have set for session.save_path.

it should be either /tmp or /sessiondata

then go to your PHP directory and make sure that you have that folder.  If not create it or change the php.ini file.

 

by: JconServPosted on 2004-02-19 at 08:50:41ID: 10404096

A very simple solution would be to write child scripts loaded by the parent meaning that you would have 1 script that checks if a session exists and validates it and another script to create/remove the session. including the files with "include('filename.php');

on your child files you will want to have functions for each different action....

for example if you have a function called checksession(); in checksession.php you would want checksession() to return true if you want your user to continue and false if not.

### Include checksession.php in each page you want validated ##

if(checksession() == true){
 //continue
header("Location: " . $_SERVER["REQUEST_URI"]);
}else{
header("Location: login.php");
}

createsession.php as a child file is optional since usually you only have to call this from the login page only. The benefits of haveing createsession.php as a child is that you can create functions to build and destroy the session and with the call of a function it should be very simple to do in multiple pages.

There are a few ways to do what you want the above would be recommended but you can use cookies as well or you can include a validation file on each individual page. My suggestion may take a while to implement but it is versatile and easy to upgrade and also secure. Good luck, if you still need help i'll do what I can

- John O'Connor

 

by: majorspankPosted on 2004-02-19 at 09:23:31ID: 10404419

Mr. O'Connor has it close to what I meant, the following is closer

<?php
// in file search/account.php

if (no session) {
    $ref = rawUrlEncode($_SERVER["REQUEST_URI"]);
   header("Location: login.php?dest=" . $ref);
   exit()
}
?>

<?php
// in file login.php

if (! isset ($dest)) {
    $dest = "account.php";
}

if (user login ok) {
    header("Location: " . $dest);
}
?>

 

by: jkna_gunnPosted on 2004-02-20 at 02:14:03ID: 10410944

on each page I store the page name inside a session variable, so if they are not logged in, and try to access that page they are taken to teh login page, if the login is successful then i check if that session variable has been set and redirect to that page, if not then i redirect to the index page.

 

by: JconServPosted on 2004-02-20 at 09:16:56ID: 10414265

$PHP_SELF is a global variable that  = the page name.... for future reference....


still not exactly sure what your trying to do that our solutions wouldnt already have fixed

20120131-EE-VQP-002

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