Reset Usability Test

'; if(isset($_POST['reset'])) { echo '
Resetting Usability Test ... '; $db = new basis_db(); $qry = " delete from public.tbl_konto where person_id in (6008,5821,22186,18441,17461,12749,21728,21297,17905,21768,1671,18572,16215,17469,1211,7938,16678,22731,15892,15732,15299,18396,752,5859,16370,18749,15812,23369); delete from public.tbl_konto where person_id=2656 and betrag='363.36'; update lehre.tbl_lehrveranstaltung set sort=NULL where studiengang_kz=10002 and semester=2; delete from lehre.tbl_lehreinheitmitarbeiter where lehreinheit_id=26208; delete from lehre.tbl_lehreinheitgruppe where lehreinheit_id=26260; INSERT INTO lehre.tbl_lehreinheitgruppe (lehreinheitgruppe_id, lehreinheit_id, studiengang_kz, semester, verband, gruppe, gruppe_kurzbz, updateamum, updatevon, insertamum, insertvon, ext_id) VALUES ('23100', '26260', '10001', '1', NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL); delete from public.tbl_prestudentstatus where prestudent_id=(select prestudent_id from public.tbl_prestudent where person_id=4095 and studiengang_kz=10001); delete from public.tbl_prestudent where person_id=4095 and studiengang_kz=10001; delete from public.tbl_prestudentstatus where prestudent_id=(select prestudent_id from public.tbl_prestudent where person_id=(select person_id from public.tbl_person where nachname='Midler')); delete from public.tbl_prestudent where person_id=(select person_id from public.tbl_person where nachname='Midler'); delete from public.tbl_adresse where person_id=(select person_id from public.tbl_person where nachname='Midler'); delete from public.tbl_person where nachname='Midler'; "; if($db->db_query($qry)) echo 'done'; else echo 'error'.$db->db_last_error(); } ?>