mySQL getting primary key of the last added record

Here's my problem: I'm trying to insert a record into a table, then redirect to a page that shows information about that record. I do the INSERT INTO tblname VALUES (...), and let mySQL assign an auto_incrementing primary key ID field. Does php have a function (like mysql_affected_rows(), I guess) that can tell you about the last record that was inserted? Or maybe it's in mySQL -- I've done something like this with SQL Server 7. Or maybe there's an easy workaround that I'm missing. Any help? Thanks! // jeff