Getting last insert id?

["Chris Payne" <chris@planetoxygene.com>]

Hi there everyone,

I use the below to insert some data into my database:


mysql_query ("INSERT INTO forummessages (Postedby, email, subject, message, ForumID, posted, parentid) 
               VALUES ('$Postedby', '$email', '$subject', '$message', '$ForumID','$posted','$parentid')
");

But once it has done this, I need to get the id it has generated in the DB and then update that record with the id it generate, so how can I get the id from the above insert?

Any help would be greatly appreciated :-)

Regards

Chris