如何接收 Telegram Bot 的 Bing 翻译？

Question

我正在创建翻译机器人，我选择了 Microsoft Translator - 来自 Microsoft Azure Market Place 的文本翻译。
现在我只想练习和选择 200 万字的免费计划。
我创建了 bot，注册了它并使其可以接收和回复用户的消息。
然后我去 https://msdn.microsoft.com/en-us/library/hh454950.aspx 接收访问令牌。可能在那里出现了我的问题。
现在我的代码是：

 <?php

//Set errors show
ini_set('display_errors', 1);
ini_set('log_errors', 1);
error_reporting(E_ALL);

    //Set bot's token
    define('BOT_TOKEN', "my telegram bot token");
    define('API_URL', 'https://api.telegram.org/bot'.BOT_TOKEN.'/');


    //Set bot's receiving information
    $update = file_get_contents("php://input"); 
    $update = json_decode($update, true);

    //Receive user's chatid and his message to bot
    $chat_id = $update["message"]["chat"]["id"];
    $message = $update["message"]["text"];


        function sendMessage($chat_id, $answer)

                {
                  file_get_contents(API_URL ."sendMessage?chat_id=".$chat_id."&text=".urlencode($answer));
                }


    //Receive access token to translate
    class _auth {

        function getToken($grantType, $scopeUrl, $clientId, $clientSecret, $authUrl){

            $ch = curl_init();

            $params = array(
                'grant_type'     => $grantType,
                'scope'         => $scopeUrl,
                'client_id'     => $clientId,
                'client_secret' => $clientSecret

            );
            $params = http_build_query($params);

            curl_setopt_array($ch, array(

                CURLOPT_URL             => $authUrl,
                CURLOPT_POST        => true,
                CURLOPT_POSTFIELDS      => $params,
                CURLOPT_RETURNTRANSFER  => true,
                CURLOPT_SSL_VERIFYPEER  => false,
                CURLOPT_HTTPHEADER      => array(

                    "Content-type: text/xml",
                    "Authorization: Bearer ". $access_token,

                )   
            ));
            $response = curl_exec($ch);
            curl_close($ch);

            $a_resp = json_decode($response);
            $access_token = $a_resp->access_token;


        }


    }

    if($message){
        $a              = new _auth();

        $clientId       = "my app's client Id";

        $clientSecret   = "My app's client secret";

        $authUrl        = "https://datamarket.accesscontrol.windows.net/v2/OAuth2-13/";

        $scopeUrl       = "http://api.microsofttranslator.com";

        $grantType      = "client_credentials";

        sendTranslate($message);

        $answer = $message;

        sendMessage($chat_id, $answer);


    }

    function sendTranslate($message){

        $message = urlencode($message);
        file_get_contents('http://api.microsofttranslator.com/V2/Http.svc/Translate?Text='.$message.'&To=%27ru%27&From=%27en%27');

    }

这个想法很简单，用户只需 post 一种语言的一个词，然后机器人 returns 进行翻译。
但是，目前还不能。
我认为这个问题与 access_token 有某种联系，但我不确定。
所以，问题是：如何将我的机器人与 Microsoft 翻译器连接起来。然后将用户的消息发送给译者，接收译者的回答并发送给用户？

Answer 1

终于明白了！
这是代码。附上评论给大家说清楚

 //Create class of basic params which required to connection
class _translate {

    private $_client_id;
    private $_client_secret; 
    private $grant_type = 'client_credentials';
    private $scope_url  = 'http://api.microsofttranslator.com';


public function __construct($clientID, $clientSecret) {

        $this->_client_id       = $clientID;
        $this->_client_secret   = $clientSecret;

}
    //Create function for curl 
    public function getResponse($url) {

    $ch = curl_init();

    curl_setopt_array($ch, array(
        CURLOPT_URL                     => $url,
        CURLOPT_HTTPHEADER              => array(

        'Authorization: Bearer '.$this->getToken(),
        'Content-Type: text/xml'

        ),
        CURLOPT_RETURNTRANSFER          => true,
        CURLOPT_SSL_VERIFYPEER          => false
    ));

    $response = curl_exec($ch);

    curl_close($ch);

    return $response;
    }

    //Function to receive access token for translation
    public function getToken($clientID, $clientSecret) {

    //Set user's id and ST 
    $clientID           = $this->_client_id;
    $clientSecret           = $this->_client_secret;


    $ch = curl_init();
        //Set params for request
        $params = array(
            'grant_type'        => $this->grant_type,
            'scope'             => $this->scope_url,
            'client_id'     => $clientID,
            'client_secret' => $clientSecret,
        );
        $row = http_build_query($params, '', '&');

    curl_setopt_array($ch, array(
            CURLOPT_URL                     =>'https://datamarket.accesscontrol.windows.net/v2/OAuth2-13/',
            CURLOPT_POST                    => true,
            CURLOPT_POSTFIELDS              => $row,
            CURLOPT_RETURNTRANSFER          => true,
            CURLOPT_SSL_VERIFYPEER          => false
    ));


    $response = curl_exec($ch);
    curl_close($ch);


    $response_obj = json_decode($response);

    //Receive access token for further operations
    return $response_obj->access_token;
    }

    //Set function for translation
    public function getTranslation($fromLanguage, $toLanguage, $text) 
        {
            //Create answer to server with specified curl
            $response = $this->getResponse($this->getURL($fromLanguage, $toLanguage, $text));

            //To delete xml tegs
            return strip_tags($response);
        }

    //This function sets url which our bot will call
    public function getURL($fromLanguage, $toLanguage, $text) 
    {
        return 'http://api.microsofttranslator.com/v2/Http.svc/Translate?text='.urlencode($text).'&to='.$toLanguage.'&from='.$fromLanguage;
    }
}


    //Default
    //Translate user's message
    if($message)
    {
        //connect to our app with it's id and 
        $translate = new _translate('id', 'secret');

        /* 
        *  Set translation language first - from, second - to.
        *  $message - user's message
        */

        $translation = $translate->getTranslation('en', 'ru', $message);

        //get translation of user's message and send it back to user
        $answer = $translation;

        sendMessage($chat_id, $answer);

    }