How can I implement commit/rollback for MySQL in PHP?

Question

Well basically I have this script that takes a long time to execute and occasionally times out and leaves semi-complete data floating around my database. (Yes I know in a pe

Answer 1

autocommit(FALSE);
    $mysqli->query("insert into tblbook (id,cid,book) values('','3','book3.1')");
    echo $q_ins=$mysqli->affected_rows."
";
    $mysqli->query("update tblbook set book='book3' where cid='3'");
    echo $q_upd=$mysqli->affected_rows."
";

    if($q_ins==1 && $q_upd==1)
    {
        $mysqli->commit();
        echo "Commit
";
    }
    else
    {
        $mysqli->rollback();
        echo "Rollback
";
    }
}
?>