> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vobiz.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# PHP SDK

> Build PHP voice apps with the Vobiz SDK - outbound calls, SIP trunks, CDR, and call recording across 130+ countries including India.

The official PHP SDK for the Vobiz Voice API. Make calls, manage SIP trunks, handle CDR, record calls, configure phone numbers, and more - natively from your PHP application or framework.

**Source code:** [vobiz-ai/Vobiz-PHP-SDK](https://github.com/vobiz-ai/Vobiz-PHP-SDK)

## Installation

Install with Composer (once published to Packagist):

```bash theme={null}
composer require vobiz/vobiz-php
```

Or build from source:

```bash theme={null}
git clone https://github.com/vobiz-ai/Vobiz-PHP-SDK.git
cd Vobiz-PHP-SDK
composer install
```

## Authentication

All API calls require your **Auth ID** and **Auth Token**, available in the [Vobiz Console](https://console.vobiz.ai). The first argument (`apiKey`) maps to your Auth ID and is sent as the `X-Auth-ID` header; `authToken` is sent as `X-Auth-Token`.

```php theme={null}
<?php

require 'vendor/autoload.php';

use Vobiz\VobizClient;

$client = new VobizClient(
    apiKey: getenv('VOBIZ_AUTH_ID'),       // sent as X-Auth-ID
    authToken: getenv('VOBIZ_AUTH_TOKEN')  // sent as X-Auth-Token
);
```

## Quick start

Make an outbound call:

```php theme={null}
<?php

require 'vendor/autoload.php';

use Vobiz\VobizClient;
use Vobiz\Calls\Requests\MakeCallRequest;

$authId = getenv('VOBIZ_AUTH_ID');
$client = new VobizClient(
    apiKey: $authId,
    authToken: getenv('VOBIZ_AUTH_TOKEN'),
);

$response = $client->calls->makeCall(
    $authId,                                 // your account Auth ID
    new MakeCallRequest([
        'from'         => '14155551234',     // Vobiz-enabled number or SIP URI
        'to'           => '+919876543210',   // destination in E.164 format
        'answerUrl'    => 'https://example.com/answer', // webhook returning VobizXML
        'answerMethod' => 'POST',
    ])
);
```

## VobizXML

The SDK handles REST interactions only. When a call is answered, Vobiz fetches **VobizXML** from your `answerUrl` webhook to control the call:

```xml theme={null}
<Response>
  <Speak voice="WOMAN" language="en-US">Thank you for calling.</Speak>
</Response>
```

## Resources

* [GitHub repository](https://github.com/vobiz-ai/Vobiz-PHP-SDK)
* [Vobiz Console](https://console.vobiz.ai)
* [API documentation](/introduction)
* [VobizXML reference](/xml/response)