Warning: Unknown: Your Script Possibly Relies on A Session Side-effect

I’ve said before, curently I’m doing website migration from my temporary hosting to my current hosting at innohosting. I have to make some adjustments in order to avoid some errors caused by differences in the server.

Some of the errors that I found were:

• Wordpress : You Do Not Have Sufficient Permissions to Access This Page. The most common cause of this error is a wordpress upgrade that didn’t complete or/and the changed of table prefix on the migration process. This error solved
• Wordpress Database Management plugin : WP-DBManager fails to backup database, makes 0 kb backup file and Fatal error: Allowed memory size of 33554432 bytes exhausted solved here
• Warning: mysql_real_escape_string(): Access denied for user: ‘nobody@localhost’ etc. Found a fix : change all the mysql_real_escape_string to mysql_escape_string
• Warning: Unknown(): Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_
  compat_warn to off, respectively. in Unknown on line 0. Here we are now to solve this problem

I get this warning at the bottom of my membership page when I tried to logging in. This error caused by old methode used by my script.  Innohosting is using PHP 5 (latest PHP).

How to Solve Warning: Unknown(): Your script possibly relies on a session side-effect which existed until PHP 4.2.3?

I found the solution here: http://www.daniweb.com/forums/thread190425.html

If you are using the session_register(“name”); You need to upgrade it to the $_SESSION['name'] = $name;.

So..I make some modifications to my old script

session_start ();
session_register ('password_session');
session_register ('id_ses');
$password_session = md5(uniqid(rand(),true));
$id_ses = $rs->id;
$loncat = 'member/index.php';

My new script

session_start ();
$password_session = md5(uniqid(rand(),true));
$id_ses = $rs->id;
$_SESSION('password_session') = $password_session;
$_SESSION('id_ses') = $id_ses;
 $loncat = 'member/index.php';
 

Now my script working properly without changing php.ini, but as an alternative you can add the below code to php.ini to eliminate the error:

session.bug_compat_42 = 1
session.bug_compat_warn = 0