How to Easily Migrate Your PHP Voice Application from Twilio to Plivo

Migrating from Twilio to Plivo is a seamless and painless process. The two companies’ API structures, implementation mechanisms, XML structure, SMS message processing, and voice call processing are similar. We wrote this technical comparison between Twilio and Plivo APIs so that you can scope the code changes for a seamless migration.

Understanding the differences between Twilio and Plivo development

Most of the APIs and features that are available on Twilio are also available on Plivo and the implementation mechanism is easier as the steps involved are almost identical. This table gives a side-side comparison of the two companies’ features and APIs. An added advantage with Plivo is that not only can you code using the old familiar API/XML method, you can also implement your use cases using PHLO (Plivo High Level Objects), a visual workflow builder that lets you create workflows by dragging and dropping components onto a canvas — no coding required.

Features and APIsTwilioPlivoSimilaritiesImplementation Interface
Voice API: Make phone callsRequest and response variables’ structureAPI
PHLO
Programmatically manage call flowsTwimlPlivo XMLXML element and its attributes structureXML
PHLO
Geo PermissionsFeature parityConsole
Number Lookup APIAPI ParityAPI
Phone number managementFeature parityAPI
Console
Call InsightsFeature parityConsole
Validating RequestsFeature parityAPI
XML
SubaccountsFeature parityAPI
Speech recognitionFeature parityXML
SSML (Speech Synthesis Markup Language)Feature parityXML
PHLO
Browser and Mobile SDKsFeature parityBrowser
Android
iOS
TranscriptionFeature parityAPI
XML
PHLO
Custom SIP HeadersFeature parityAPI
XML
PHLO
Browser SDK
Mobile SDKs
HTTP callbacksFeature parityAPI
XML
PHLO

Plivo account creation

Start by signing up for a free trial account that you can use to experiment with and learn about our services. The free trial account comes with free credits, and you can add more as you go along. You can also add a phone number to your account to start testing the full range of our voice and SMS features. A page in our support portal walks you through the signup process.

You can also port your numbers from Twilio to Plivo, as we explain in this guide.

Migrating your Voice application

As mentioned earlier, you can migrate your existing application from Twilio to Plivo by refactoring the code, or you can try our intuitive visual workflow builder PHLO. If you prefer the API approach, you can follow one of the voice quickstart guides based on your preferred language and web framework. Plivo offers server SDKs in seven languages: PHP, Node.js, .NET, Java, Python, Ruby, and Go. For another alternative that lets you evaluate Plivo’s SMS APIs and their request and response structure, use our Postman collections.

How to make an outbound call

Let’s take a look at the process of refactoring the code to migrate your app from Twilio to Plivo to set up a simple PHP application to make an outbound call by changing just a few lines of code.

TwilioPlivo
<?php
require_once '/path/to/vendor/autoload.php';
use Twilio\Rest\Client;
$sid = getenv("TWILIO_ACCOUNT_SID");
$token = getenv("TWILIO_AUTH_TOKEN");
$twilio = new Client($sid, $token);
$call = $twilio->calls->create(
   "+14155551212", // to
   "+15017122661", // from
  ["url" => "http://demo.twilio.com/docs/classic.mp3"]);
print ($call->sid);
<?php
require 'vendor/autoload.php';
use Plivo\RestClient;
$authId = getenv("PLIVO_AUTH_ID");
$authToken = getenv("PLIVO_AUTH_TOKEN");
$client = new RestClient($authId, $authToken);
$response = $client->calls->create(
   '<caller_id>', 
   ['<destination_number>'], 
   'https://s3.amazonaws.com/static.plivo.com/answer.xml', 
   'GET'
   );
print_r($response);

Alternatively, you can implement the same functionality using one of our PHLO templates. For example, if you want to make an outbound call, your PHLO would be this:

Create a PHLO for outbound calls

How to receive an incoming call

You can migrate an application for receiving and handling an incoming call from Twilio to Plivo just as seamlessly, as in this example:

TwilioPlivo
<?php
require_once '/path/to/vendor/autoload.php';
use Twilio\TwiML\VoiceResponse;

$response = new VoiceResponse;
$response->say("Hello, you just received your first call", array(
    'voice' => 'alice'
));
print $response;
<?php
require '../vendor/autoload.php';
use Plivo\XML\Response;

$response = new Response();
$speak_body = "Hello, you just received your first call";
$response->addSpeak($speak_body);

Header('Content-type: text/xml');
echo ($response->toXML());
?>

Here again, you can implement the same functionality using one of our PHLO templates. Your PHLO would look like:

Create a PHLO to receive incoming call

For more information about migrating your Voice applications to Plivo, check out our detailed use case guides, available for all seven programming languages and PHLO.

How to forward an incoming call

You can migrate an application for forwarding an incoming call from Twilio to Plivo just as seamlessly, as in this example:

TwilioPlivo
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use Twilio\TwiML\VoiceResponse;
class VoiceController extends Controller
{
    public function forwardCall()
    {
        $response = new VoiceResponse();
        $response->dial('415-555-4567');
        $response->say('Goodbye');
        Header('Content-type: text/xml');
        echo $response;
    }
}
<?php
namespace App\Http\Controllers;
require '../../vendor/autoload.php';
use Plivo\XML\Response;
use Illuminate\Http\Request;
class VoiceController extends Controller
{
    public function forwardCall()
    {
        $response = new Response();
        $dial = $response->addDial();
        $dial->addNumber("14155554567");
        Header('Content-type: text/xml');
        echo $response->toXML();
    }
}

Here again, you can implement the same functionality using one of our PHLO templates. Your PHLO would look like:

Create a PHLO to receive incoming call

For more information about migrating your Voice applications to Plivo, check out our detailed use case guides, available for all seven programming languages and PHLO.

More use-cases

You can migrate your applications serving various other use-cases like the following ones too:

Simple and reliable

And that’s all there is to migrate your PHP Voice app from Twilio to Plivo either using Plivo’s PHP SDK or PHLO. Our simple APIs work in tandem with our comprehensive global network. See for yourself — sign up for a free trial account.

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