INSERT problem--Need help urgently

Hi all: I was having some problem with INSERT query here and do hope to get some help real soon. I have a form whereby once the form is submitted, the values entered shall be inserted into the database. Next I have also written a SELECT query to view the records which have just been inserted into the database. Data was able to insert into the database and I was also able to retrieve these data from database. However, my problem is, whenever a form was being submitted, it actually INSERT another row of null values into the database. And so, when I clicked to view my data, i can see the previously inserted values as well as an empty row of records. Why is this so? How can I prevent the row of null value to be inserted? I have included a snip of my code below and hope to get some help real soon. All help are greatly appreciated. Thanks in advance. <snip> $dsn = "mysql://root:password@localhost/databaseName"; $db = DB::connect ($dsn); if (DB::isError ($db)) die ($db->getMessage()); $tutor_name = $_POST["tutor_name"]; $tutor_contact = $_POST["tutor_contact"]; $tutor_email = $_POST["tutor_email"]; $tutor_profile = $_POST["tutor_profile"]; $sql ="INSERT INTO tutor (tutor_name, tutor_contact, tutor_email, tutor_profile) VALUES('$tutor_name','$tutor_contact','$tutor_email','$tutor_profile')"; $result = $db->query($sql); if( DB::isError($result) ) { die ($result->getMessage()); } ?> </snip> Is there anything wrong with my SELECT query ?? Thanks in advance. Regards, Irin