PHP Session works fine under one directory, but the same code fails in a different directory

user_16452422 0
Viewed 77

I have the below code that works fine under /t/cgi-bin/test1.php, but the same code fails under /p/cgi-bin/test1.php. Every time I run under /p/cgi-bin..., it takes me to test_log1.html right away. It is not waiting for 15 minutes before it times out to test_log1.html. Any help is appreciated.

<?php
      session_start();
      if(isset($_SESSION["test"]))
      {
                if((time() - $_SESSION['last_login_timestamp']) > 900)
           {
                header("location:../test_log1.html");
           }
           else
           {
                $_SESSION['last_login_timestamp'] = time();
           }
      }
      else
      {
           header('location:../test_log2.html');
    }
?>
timeout session authentication php
3 Answers

Nothing wrong with the code. The file had to be recreated. It is working now. This post can be closed.

user_164524220

There are a few issues.

One

Perhaps because by default there is only one session per browser. It's not per tab, or per url.

So, once you have run, the session already has the last_login_timestamp. It then uses the same value for the second session.

  1. If you want them to be different then you have to use different session ids for the two paths.

  2. Another way is to clear/reset the session at the start of the file.

  3. Yet another is to use a different test variable such as test1 and test2.

Two

test is never getting set, and the value of last_login_timestamp is null. I am assuming that you are setting test elsewhere. So, for testing, here is the updated code. The ?? operator ensures that the value goes to time when it is null

<?php
      session_start();

      if(isset($_SESSION["test"]))
      {
           $last = $_SESSION['last_login_timestamp'] ?? time();
           if((time() - $last) > 900)
           {
                header("location:../test_log1.html");
           }
           else
           {
                echo 'Has not timed out';
           }
      }
      else
      {
          $_SESSION["test"] = 'xx';
          header('location:../test_log2.html');
    }
?>

If you want three independent sessions then you have to use different session_ids or just different variables. So use test_p and last_login_timestamp_p for directory p, etc.

Three

PHP is a server side language. When run, nothing is sent to the browser, except the redirect, or echo from this code above.

Once the session variable is set, and 15 mins later you run the code, it will time out in both places. This will keep happening from then on, until the session variable is cleared.

However, it can not time out on the browser and go to a different page by itself, after 15 mins. For that you need to use javascript.

user_47794720

try:

header('Location: '../test_log2.html');
user_198653960
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