Variable loses value when I change directory

[andyheer]

This used to work but last week my web host changed something on the server.

This script, aaa1.php, is in a subdirectory www.mydomain.com/OP

<?
session_start();
$_SESSION['clientid']="A1234";
echo('<meta http-equiv="Refresh" content="0; URL=http://www.mydomain.com/OP/aaa2.php">');
?>

aaa2.php is simply:
<?
session_start();
$clientid=$_SESSION['clientid'];
echo "Client: $clientid";
?>

and it works fine, giving a page showing "Client: A1234"

However if I put aaa2.php into the main, home directory and change aaa1.php to
<?
session_start();
$_SESSION['clientid']="A1234";
echo('<meta http-equiv="Refresh" content="0; URL=http://www.mydomain.com/aaa2.php">');
?>

ie, I start off in the OP sub-directory but change to the home directory, it doesn't work.

The result just shows "Client:"

Like I say it used to work but doesn't now. Help!

Thanks for any advice.

Andy

[ragedigital]

You may have to specify the path for sessions. My web host had me use a specific address.

http://us3.php.net/session_save_path

[bradgrafelman]

The save path has nothing to do with it if it works in one situation but not the other - what you need to do is set the path for the cookie using [man]session_set_cookie_params/man. Ensure that the path is set to '/' so that it works for all directories/subdirectories on your domain.

Also note that you'll have a similar problem if you go from www.mydomain.com to mydomain.com (and that the solution is similar - force the domain part of the cookie to be set to ".mydomain.com" and it should work across all subdomains).