[kh99]

I think your problem is with these two lines:

$title = addslashes($_POST["test title bla bla test"]);                                           // The title of the thread
$pagetext = addslashes($_POST["test content bla bla test 123 this is long enough"]);

I don't think you want the $_POST[] in there.

I'm not sure why you had trouble with the $db object, it should be defined (unless you had your code inside a function, then you'd need a global statement).