Question

我的Facebook聊天机器人正在运行但它在我的初始消息发送回来之后发回了多条消息。这是我的webhook脚本（我很欣赏它是一个非常粗略的工作示例）：

Answer 1

FB会使用原始收到的消息点击您的webhook网址并进行处理。然后，您将响应发送回用户，脚本结束。然后，一旦将消息传递给用户，FB就会向webhook URL发送传递确认。由于您的脚本始终设置为发送＆＃34; Hey Lee！＆＃34;在任何时候调用它，传递回调实际上是触发另一个要发送的消息，然后另一个传递确认进来，然后该过程重复它自己。要解决此问题，请在代码周围添加if语句以发送消息。这是一个例子。

＆＃13;

$challenge = $_REQUEST['hub_challenge'];
$verify_token = $_REQUEST['hub_verify_token'];

if ($verify_token === 'MY_VERIFICATION_TOKEN') {
  echo $challenge;
}

$input = json_decode(file_get_contents('php://input'), true);

$sender = $input['entry'][0]['messaging'][0]['sender']['id'];
$message = $input['entry'][0]['messaging'][0]['message']['text'];


//API Url
$url = 'https://graph.facebook.com/v2.6/me/messages?access_token=<my-token>';

//Initiate cURL.
$ch = curl_init($url);

if($message=="hello")
{
        //The JSON data.
        $jsonData = '{
        "recipient":{
                "id":"'.$sender.'"
        },
        "message":{
                "text":"Hey Lee!"
        }
        }';
}

//Encode the array into JSON.
$jsonDataEncoded = $jsonData;

//Tell cURL that we want to send a POST request.
curl_setopt($ch, CURLOPT_POST, 1);

//Attach our encoded JSON string to the POST fields.
curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonDataEncoded);

//Set the content type to application/json
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));

//Execute the request
$result = curl_exec($ch);

＆＃13;

希望有所帮助。

Answer 2

我认为是因为您无法验证发送的邮件是否为空：

试试这个：

$challenge = $_REQUEST['hub_challenge'];
$verify_token = $_REQUEST['hub_verify_token'];

if ($verify_token === 'MY_VERIFICATION_TOKEN') {
  echo $challenge;
}

$input = json_decode(file_get_contents('php://input'), true);

$sender = $input['entry'][0]['messaging'][0]['sender']['id'];
$message = $input['entry'][0]['messaging'][0]['message']['text'];


//API Url
$url = 'https://graph.facebook.com/v2.6/me/messages?access_token=<my-token>';

//Initiate cURL.
$ch = curl_init($url);

//The JSON data.
$jsonData = '{
    "recipient":{
        "id":"'.$sender.'"
    }, 
    "message":{
        "text":"Hey Lee!"
    }
}';

//Encode the array into JSON.
$jsonDataEncoded = $jsonData;

//Tell cURL that we want to send a POST request.
curl_setopt($ch, CURLOPT_POST, 1);

//Attach our encoded JSON string to the POST fields.
curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonDataEncoded);

//Set the content type to application/json
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));

//Execute the request
if(!empty($input['entry'][0]['messaging'][0]['message'])){
$result = curl_exec($ch);
}

Answer 3

尝试相同，第一个请求保存实际用户消息，其他请求不保存。如果是，我只是发一个答案 $message = $input['entry'][0]['messaging'][0]['message']['text'];不为空：

if ($message){
//send your message here
}

Facebook Chat bot（PHP webhook）发送多个回复

3 个答案: