switch($html_code[0]['SHEET_DATA'][$i][$y]){

                                                                                case "s":
                                                                                case "S":
                                                                                case "Sell":
                                                                                case "SELL":
                                                                                        $order[$order_id]['side'] = "SELL";
                                                                                        break;
                                                                                case "BUY":
                                                                                case "Buy":
                                                                                case "b":
                                                                                case "B":
                                                                                        $order[$order_id]['side'] = "BUY";
                                                                                        break;
                                                }