$totalData = mysqli_num_rows($query);
     $totalFiltered = $totalData;
     // when there is no search parameter then total number rows = total number filtered rows.
     $sql = "SELECT * FROM user WHERE 1=1 ";
     if (!empty($requestData['search']['value'])) {
         // if there is a search parameter, $requestData['search']['value'] contains search parameter
         $sql .= " AND ( name LIKE '%" . $requestData['search']['value'] . "%' ";
         $sql .= " OR email LIKE '" . $requestData['search']['value'] . "%' ";
         $sql .= " OR company LIKE '" . $requestData['search']['value'] . "%' ) ";
     }
     $query = $dbObj->query($sql);
     $totalFiltered = mysqli_num_rows($query);
     // when there is a search parameter then we have to modify total number filtered rows as per search result.
     $sql .= " ORDER BY " . $columns[$requestData['order'][0]['column']] . "   " . $requestData['order'][0]['dir'] . "  LIMIT " . $requestData['start'] . " ," . $requestData['length'] . "   ";
     /* $requestData['order'][0]['column'] contains colmun index, $requestData['order'][0]['dir'] contains order such as asc/desc  */
     echo $userObj->fetchForJQDT($requestData['draw'], $totalData, $totalFiltered, $sql);
 }
 if (filter_input(INPUT_POST, "deleteThisUser") != NULL) {
     $postVars = array('id');
     // Form fields names
     //Validate the POST variables and add up to error message if empty
     foreach ($postVars as $postVar) {
         switch ($postVar) {
             default:
                 $userObj->{$postVar} = filter_input(INPUT_POST, $postVar) ? mysqli_real_escape_string($dbObj->connection, filter_input(INPUT_POST, $postVar)) : '';
                 if ($userObj->{$postVar} === "") {
                     array_push($errorArr, "Please enter {$postVar} ");
                 }
                 break;
         }
     }