} else {
         $response["JunkshopID"] = $reply;
     }
     echo json_encode($response);
 } else {
     if ($tag == 'requestRegister') {
         $activationCode = $_POST['activationCode'];
         $username = $_POST['username'];
         $password = $_POST['password'];
         $reply = $DBFunction->VerifyCode($activationCode);
         if ($reply['status']) {
             if ($DBFunction->IsUsernameExisted($username)) {
                 $response["ErrorStatus"] = TRUE;
                 $response["ErrorMessage"] = "Sorry, username has already been taken.";
             } else {
                 $reply = $DBFunction->RequestRegister($reply['junkshopID'], $username, $password);
                 if ($reply == FALSE) {
                     $response["ErrorStatus"] = TRUE;
                     $response["ErrorMessage"] = "Sorry, there's a problem within our service. Please, try again later.\n(Error: G-4RE-G04)";
                 } else {
                     $response["JunkshopID"] = $reply;
                 }
             }
         } else {
             $response["ErrorStatus"] = TRUE;
             $response["ErrorMessage"] = $reply['message'];
         }
         echo json_encode($response);
     } else {
         if ($tag == 'requestJunkshopInfo') {
             $junkshopID = $_POST['junkshopID'];
         $response["AccountID"] = $reply["us_ID"];
         $response["AccountName"] = $reply["us_firstname"];
     }
     echo json_encode($response);
 } else {
     if ($tag == 'requestRegister') {
         $firstname = $_GET['firstname'];
         $lastname = $_GET['lastname'];
         $username = $_GET['username'];
         $address = $_GET['address'];
         $password = $_GET['password'];
         if ($DBFunction->IsUsernameExisted($username)) {
             $response["ErrorStatus"] = TRUE;
             $response["ErrorMessage"] = "Sorry, username has already been taken. Please try another.";
         } else {
             $reply = $DBFunction->RequestRegister($firstname, $lastname, $username, $address, $password);
             if ($reply == FALSE) {
                 $response["ErrorStatus"] = TRUE;
                 $response["ErrorMessage"] = "Sorry, there's a problem within our service. Please, try again later.\n(Error: 4RE-G04)";
             } else {
                 $response["AccountID"] = $reply["us_ID"];
                 $response["AccountName"] = $reply["us_firstname"];
             }
         }
         echo json_encode($response);
     } else {
         if ($tag == 'requestJunkshopList') {
             $junkshopList = $DBFunction->RequestJunkshopList();
             if ($junkshopList == FALSE) {
                 $response["ErrorStatus"] = TRUE;
                 $response["ErrorMessage"] = "Sorry, there's a problem within our service. Please, try again later.\n(Error: 4JK-L04)";