Ответ от сервера к скрипту не отправляется, как исправить?

function hook.onShowDialog(dialogID, style, title, button1, button2, text)
    if title:find("Капча") then 
        captchaServer = sampGetCurrentServerName()
        captchaServer = captchaServer:match("Diamond Role Play | (.+)")
        if captchaServer ~= nil then
            if captchaServer:find("Emerald") then 
                captchaServer = "Emerald"
            elseif captchaServer:find("Amber") then captchaServer = "Amber" 
            elseif captchaServer:find("Trilliant") then captchaServer = "Trilliant" 
            elseif captchaServer:find("Sapphire") then captchaServer = "Sapphire" 
            elseif captchaServer:find("Crystal") then captchaServer = "Crystal" 
            elseif captchaServer:find("Ruby") then captchaServer = "Ruby" 
            end 
        end
        captchaQuestion = text:match("Вопрос:\n(.+)\n\nВарианты ответа:")
        captchaAnswer[1] = text:match("1. (.+)\n2.")
        captchaAnswer[2] = text:match("2. (.+)\n3.")
        captchaAnswer[3] = text:match("3. (.+)\n4.")
        captchaAnswer[4] = text:match("4. (.+)\n\n{FFFFFF}Введите")
        sampAddChatMessage("{00A885}анти-капча{ffffff}: делаем запрос к базе данных", -1) 
        local serverEncoded = urlencode(captchaServer)
        local questionEncoded = urlencode(captchaQuestion)
        httpRequest('http://localhost/index.php?cap_server_2='..serverEncoded..'&cap_question_2='..questionEncoded, nil, function(response, code, headers, status)
            if response then 
                sampAddChatMessage("{00A885}анти-капча{ffffff}: ищем капчу в базе данных...", -1)
                 local trueAnswer = decodeJson(response.text)["cap_answer_to_lua"]
                 sampAddChatMessage('true answer: '..trueAnswer, -1)
            else 
                sampAddChatMessage("{00A885}анти-капча{ffffff}: капча в базе данных не найдена", -1)
            end
        end)
        isCaptchaActive = true
    end
end

$cap_server_2 = $_GET["cap_server_2"];
$cap_question_2 = $_GET["cap_question_2"];
$cap_answer_to_lua;

$sql = "SELECT server, question, answer FROM drp_captch WHERE server = '$cap_server_2' AND question = '$cap_question_2'";
$result = $conn->query($sql);
echo $sql;

if ($cap_question_2 && $cap_server_2) {

    if ($result->num_rows > 0) 
    {
        $IsCaptchInTable = true;
        $row = mysqli_fetch_array($result);
        $cap_answer_to_lua = $row["answer"];
        echo json_encode( $cap_answer_to_lua );
        $result->free();
    }
    else { 
        $IsCaptchInTable = false;
    }
}