Zadarma API PHP Integration Step-by-Step Guide

Zadarma is a popular VoIP provider that allows developers to manage telephony services programmatically via its API. Zadarma API PHP integration can enable developers to automate call handling, retrieve call statistics, manage accounts, and perform numerous telephony operations seamlessly. This tutorial provides a step-by-step guide for beginners and intermediate PHP developers to implement Zadarma API effectively.

What is Zadarma API?

Zadarma API is a RESTful API that allows developers to interact with the Zadarma telephony system. With the API, you can:

  • Make outbound calls programmatically.
  • Retrieve call statistics and reports.
  • Check account balance.
  • Manage virtual numbers.
  • Automate various telephony operations.

The API supports standard HTTP methods such as GET and POST and returns responses in JSON format, making it easy to integrate with PHP.

Why Use Zadarma API in PHP?

PHP is widely used in server-side programming, especially for web applications. Integrating Zadarma API with PHP enables:

  • Automation: Automatically handle incoming and outgoing calls.
  • Reporting: Retrieve real-time call data and analyze user behavior.
  • Efficiency: Reduce manual telephony operations using scripts.
  • Custom Applications: Build CRM, telemarketing, or customer support systems with PHP that interact directly with Zadarma.

Prerequisites for Zadarma API PHP integration

Before you start integrating the Zadarma API in PHP, make sure you have the following:

  • PHP 7.4 or above installed on your server.
  • cURL enabled in your PHP configuration (used to make HTTP requests).Check with:
  • A Zadarma account with API access enabled.
  • Basic knowledge of REST APIs and JSON parsing in PHP.

Getting Zadarma API Key and Secret

  1. Log in to your Zadarma account.
  2. Navigate to API Settings in your dashboard.
  3. Generate a new API Key and Secret.
  4. Make sure to store these securely; these credentials are required for all API calls.

Note: Treat your API secret like a password. Never expose it in client-side code.

Setting Up PHP Environment

Create a folder for your project, for example: zadarma-api-php.
Make sure your PHP server is running. You can use XAMPP, MAMP, or native PHP server.
Install dependencies (optional but recommended):
Using Composer for HTTP requests via Guzzle: composer require guzzlehttp/guzzle
If you prefer not to use Guzzle, PHP cURL is sufficient for API requests.

Making Your First API Request

Zadarma API requires HTTP Basic Authentication using your API Key and Secret.
PHP cURL Example:

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This simple script will output your account balance in JSON format.

Handling API Responses

Zadarma API responses are in JSON format. You can handle them in PHP using json_decode():

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Tips:

  • Always validate the response.
  • Check for HTTP errors or missing keys to avoid runtime errors.

Practical Examples of Zadarma API in PHP

1. Get Account Balance

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2. Retrieve Call History

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3. Make an Outgoing Call

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Error Handling and Troubleshooting

Common errors when working with Zadarma API:

  • 401 Unauthorized: Invalid API Key or Secret.
  • 400 Bad Request: Missing or wrong parameters.
  • : API rate limit exceeded.

Best practices for error handling:

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Conclusion

Integrating Zadarma API in PHP allows you to automate and streamline telephony operations effectively. By following this tutorial:

  • You learned how to set up your PHP environment.
  • You acquired your API credentials.
  • You made your first API request and handled responses.
  • You implemented practical features such as retrieving balances, call history, and making calls.
  • You understood best practices and error handling.

With this foundation, you can now build custom telephony solutions, CRM integrations, or automated calling systems with PHP and Zadarma API.