Callback doesn't work

[brightproject]

I use plivo for linked two telephone numbers by callback function.
But code preview in example:
https://www.plivo.com/docs/getting-started/making-outbound-calls/

'+7926*******', # The phone numer to which the all has to be placed 'from' => '+7925*******', # The phone number to be used as the caller id 'answer_url' => "http://caringfarmer.ru/testing/answer.xml", # The URL invoked by Plivo when the outbound call is answered 'answer_method' => "GET" # The method used to call the answer_url ); // $response = $p->make_call($params); // echo "

";
// print_r ($response);
// echo "

"; ``` I use: "plivo/plivo-php": "^1.1", "guzzlehttp/guzzle": "^6.1" But when I started code in work, on my telephone arrived call from +7925, I take phone, but don't listen voice, and calling interrupted through 5 seconds. In debug on site plivo I found INFO - code 600 XML : response is empty from GET http://caringfarmer.ru/testing/answer.xml I use POST metod also. Did not help. What is it, and as I may resolve this problem?

[cachrisman]

There are a couple of problems with the XML from http://caringfarmer.ru/testing/answer.xml (copied below):

<Response>
  <Speak language="en-GB" voice="MAN">
    This is a randomly generated text can be used in your layout
  </Speak>
  <Speak language="fr-FR">
    Ce texte généré aléatoirement peut-être utilisé dans vos maquettes
  </Speak>
  <Speak language="ru-RU" voice="MAN">
    Это случайно сгенерированный текст может быть использован в макете
  </Speak>
</Response>

1. The Plivo-PHP library doesn't support russian and accented characters. To solve, try using
   mb_encode_numericentity("Это случайно сгенерированный текст может быть использован в макете", array(0x80, 0xffff, 0, 0xffff));
   or replace the russian in the XML with
   Это случайно сгенерированный текст может быть использован в макете
2. The second Speak element for French should have a voice="MAN" or voice="WOMAN" attribute.
3. The text of the second Speak element should also be encoded properly using mb_encode_numericentity or replace it with Ce texte généré aléatoirement peut-être utilisé dans vos maquettes
4. Russian TTS is only supported using a WOMAN voice. Please see Supported Voices and Languages for details.

[brightproject]

I simple copied code from example.
Please delete wrong code from:
https://www.plivo.com/docs/getting-started/text-to-speech-on-a-call/
Too bad no wonder why your service does not support Unicode ...
I change my xml file:
http://site.ru/answer.xml
The call numbers entered with the "FROM" to the number "TO"
I picked up the phone, I heard the voice, and then the call was interrupted, the relationship with the number "FROM" not take place, but the money written off.
I have the following errors:
Message : http response failure
Status : 405
URL : http://site.ru/answer.xml
HTTP Type : response
Method: POST Headers : { date : Tue, 15 Mar 2016 18:31:09 GMT content-length : 583 content-type : text/html connection : close server : nginx/1.4.6 (Ubuntu) }
Why write method: POST if I use GET?
After callback should work according to the principle:
first there is a call to one number when you take the phone, the call goes to the caller's number, and there is a connection of two subscribers.
With me there is only one call from a subscriber, when you lift the handset, the call is interrupted after the wiretapping of voice.
Maybe I do not understand the process?
What are the names listed below?
I do not understand why these values are necessary to me, what meaning they carry?

1. api_id
2. request_uuid
3. CallUUID

[algobasket]

my code not working
if(!function_exists('plivo_sms_send2')){

function plivo_sms_send2($src,$dst,$text){   
require APPPATH.'libraries'.DIRECTORY_SEPARATOR.'plivo-php'.DIRECTORY_SEPARATOR.'vendor'.DIRECTORY_SEPARATOR.'autoload.php';
//use Plivo\RestAPI;
$ci = get_instance();
$ci->load->model('Admin_model');
$data = $ci->Admin_model->providers(5);
foreach($data as $r){ 
    $AUTH_ID = $r['api_secret_key'];
    $AUTH_TOKEN = $r['api_token'];
}
$p = new RestAPI($AUTH_ID, $AUTH_TOKEN); 
$params = array( 
        'src' => $src, // Sender's phone number with country code
        'dst' => $dst, // Receiver's phone number with country code
        'text' => $text // Your SMS text message
    );
$response = $p->send_message($params);
echo "Response : ";
print_r($response['response']);
echo "<br> Api ID : {$response['response']['api_id']} <br>";
echo "Message UUID : {$response['response']['message_uuid'][0]} <br>";

 } 

[algobasket]

Error i get
`
Parse error: syntax error, unexpected 'use' (T_USE) in /var/www/sms.supreme-data.com/html/application/helpers/plivo_helper.php on line 37
A PHP Error was encountered

Severity: Parsing Error

Message: syntax error, unexpected 'use' (T_USE)

Filename: helpers/plivo_helper.php

Line Number: 37

Backtrace:`