# What Is the Amazon SDK for PHP Version 3?
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The Amazon SDK for PHP Version 3 enables PHP developers to use [Amazon Web Services](http://www.amazonaws.cn/) in their PHP code, and build robust applications and software using services like Amazon S3, Amazon DynamoDB, and Amazon Glacier. You can get started in minutes by installing the SDK through Composer — by requiring the `aws/aws-sdk-php` package — or by downloading the standalone [https://docs.amazonaws.cn/aws-sdk-php/v3/download/aws.zip](https://docs.amazonaws.cn/aws-sdk-php/v3/download/aws.zip) or [https://docs.amazonaws.cn/aws-sdk-php/v3/download/aws.phar](https://docs.amazonaws.cn/aws-sdk-php/v3/download/aws.phar) file.

Not all services are immediately available in the SDK. To find out which services are currently supported by the Amazon SDK for PHP, see [Service Name and API Version](https://docs.amazonaws.cn/aws-sdk-php/v3/api/index.html). 

**Note**  
If you’re migrating your code from using Version 2 of the SDK to Version 3, be sure to read [Upgrading from Version 2 of the Amazon SDK for PHP](getting-started_migration.md).

## Get started with the SDK
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If you’re ready to get hands-on with the SDK, follow the [Getting started with the Amazon SDK for PHP Version 3](getting-started_index.md) chapter. It guides you through authentication with Amazon, setting up your development environment, and creating your first basic application using Amazon S3. 

## Additional resources
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+  [FAQ](faq.md) 
+  [Glossary](glossary.md) 
+  [Amazon SDKs and Tools Reference Guide](https://docs.amazonaws.cn/sdkref/latest/guide/): Contains settings, features, and other foundational concepts common among Amazon SDKs. 
+  [Guzzle Documentation](http://guzzlephp.org) 
+ Code examples using the Amazon SDK for PHP is available in the [awsdocs/aws-doc-sdk-examples](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code) repo.
+ [PHP SDK community](https://gitter.im/aws/aws-sdk-php) on Gitter.
+ [Amazon Web Services re:Post](https://repost.aws/).

GitHub:
+ Source code for the Amazon SDK for PHP is available in the [aws/aws-sdk-php](https://github.com/aws/aws-sdk-php) repo.
+  [Contributing to the SDK](https://github.com/aws/aws-sdk-php/blob/master/CONTRIBUTING.md) 
+  [Report a bug or request a feature](https://github.com/aws/aws-sdk-php/issues/new/choose) 

## API documentation
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Find API documentation for the SDK at [https://docs.amazonaws.cn/sdk-for-php/latest/reference/](https://docs.amazonaws.cn/aws-sdk-php/v3/api/).

## Maintenance and support for SDK major versions
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For information about maintenance and support for SDK major versions and their underlying dependencies, see the following in the [Amazon SDKs and Tools Reference Guide](https://docs.amazonaws.cn/sdkref/latest/guide/):
+  [Amazon SDKs and Tools maintenance policy](https://docs.amazonaws.cn/sdkref/latest/guide/maint-policy.html) 
+  [Amazon SDKs and Tools version support matrix](https://docs.amazonaws.cn/sdkref/latest/guide/version-support-matrix.html)