<?php
// Include the bundled autoload from the Twilio PHP Helper Library
require __DIR__ . '/vendor/autoload.php';
use Twilio\Rest\Client;
// Your Account SID and Auth Token from twilio.com/console
$account_sid = 'ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX';
$auth_token = '8XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX';
// In production, these should be environment variables. E.g.:
// $auth_token = $_ENV["TWILIO_ACCOUNT_SID"]
// A Twilio number you own with Voice capabilities
$twilio_number = "+12244073476";
// Where to make a voice call (your cell phone?)
$to_number = '+22678733599';
$client = new Client($account_sid, $auth_token);
try {
    $client->account->calls->create(
        $to_number,
        $twilio_number,
        array(
            // two url can't function because the first url will be erase by the value of the second
            "url" => "http://demo.twilio.com/docs/voice.xml"
        )
    );
    // echo "Started call : " . $client->sid;
} catch (Exception $e) {
    echo "Error : " . $e->getMessage();
}
?>

我从twilio号码开始打电话到那个电话号码，可以，但是无法沟通，接了电话怎么沟通？