for($j=0;$j<count($fees_type_arr);$j++){
    $month = "N/A";
    switch ($fees_type_arr[$j]) {
        case 'adm':
            $sql_record_data = array(
                    'tid' => $tid.$j+1,
                    'slip_no' => $slip_no,
                    'date_time' => $current_date_time,
                    'uid' => $uid,
                    'month' => $month,
                    'amount' => $admission_fees,
                    'fees_type' => 'adm'
            );
            if($wpdb->insert($record_table, $sql_record_data)){
                $ok = 1;
            }
            else{
                $ok = 0;
                throw new Exception($wpdb->print_error());
            }
        break;

        case "trn":
            $sql_record_data = array(
                    'tid' => $tid.$j+1,
                    'slip_no' => $slip_no,
                    'date_time' => $current_date_time,
                    'uid' => $uid,
                    'month' => $month,
                    'amount' => $transport_chg,
                    'fees_type' => 'trn'
            );
            if($wpdb->insert($record_table, $sql_record_data)){
                $ok = 1;
            }
            else{
                $ok = 0;
                throw new Exception($wpdb->print_error());
            }
        break;

        case "ann":
            $sql_record_data = array(
                    'tid' => $tid.$j+1,
                    'slip_no' => $slip_no,
                    'date_time' => $current_date_time,
                    'uid' => $uid,
                    'month' => $month,
                    'amount' => $annual_chg,
                    'fees_type' => 'ann'
            );
            if($wpdb->insert($record_table, $sql_record_data)){
                $ok = 1;
            }
            else{
                $ok = 0;
                throw new Exception($wpdb->print_error());
            }
        break;

        case "rec":
            $sql_record_data = array(
                    'tid' => $tid.$j+1,
                    'slip_no' => $slip_no,
                    'date_time' => $current_date_time,
                    'uid' => $uid,
                    'month' => $month,
                    'amount' => $recreation_chg,
                    'fees_type' => 'rec'
            );
            if($wpdb->insert($record_table, $sql_record_data)){
                $ok = 1;
            }
            else{
                $ok = 0;
                throw new Exception($wpdb->print_error());
            }
        break;
    }
}

$fees_type_arr = array("adm","ttn","trn","ann","rec");