$value) { trigger_error($key . " : " . $value, E_USER_NOTICE); } */ if ($_POST['checked'] == "true") { $sql->insert_into('presence', array('pr_user_kid_uk_id' => $_POST['user_id'], 'pr_training_tr_id' => $_POST['tr_id'])); } else { $sql->execute_query('delete from presence where pr_user_kid_uk_id = ' . $_POST['user_id'] . ' AND pr_training_tr_id = ' . $_POST['tr_id']); } ?>