Okay so setup my script, however when i execute i get this error

Fatal error: Call to a member function fetch_one() on a non-object

I know that the object exists as it is used everywhere around the site

function psess_write($id, $sess_data) {
global $db;
$data = hb_filterClientData($sess_data);
if ($db->fetch_one("SELECT COUNT(*) FROM sessions WHERE sess_id='$id'") == 0) {
$result = $db->query("INSERT INTO sessions (sess_id, sess_data, sess_updated) VALUES ('$id', '$data', UNIX_TIMESTAMP(NOW()))");
if ($db->affected_rows() == 0) return false;
} else {
$db->query("UPDATE sessions SET sess_data='$data',sess_updated=UNIX_TIMESTAMP(NOW( )) WHERE sess_id='$id'");
}
return true;
}

That is the code i am using, and i know the $db object exists, and i have set it to global but still no luck, have i missed something simple?

Thanks
Marc

I know that the object exists as it is used everywhere around the site

What about testing it ?
From what PHP tells you, it's not existant, or not an object.
Maybe it's initialized after that you reach that part of the code.

Try to put an

PHP Code:

echo "<pre>".var_dump($db)."</pre>"; 


just after global $db.
It will dump the value of $db, and I think it will say "null" or "false"...

You probably have to call session_write_close yourself. Read this note from session_set_save_handler:

Warning As of PHP 5.0.5 the write and close handlers are called after object destruction and therefore cannot use objects or throw exceptions. The object destructors can however use sessions.
It is possible to call session_write_close() from the destructor to solve this chicken and egg problem.