As of version 1.0.0 the SDK follows strict Semantic Versioning. Any breaking change, no matter how small, increments the Major version number. Since the API is regularly updated you should expect many increments to the Major Version number.

Current Version

The SDK provides the constant \DTS\eBaySDK\Sdk::VERSION that is set to the current version of the SDK.

echo DTS\eBaySDK\Sdk::VERSION;

Service Versions

The SDK supports many of the different eBay services. You can determine which version of a service the SDK supports by looking at the <SERVICE CLASS>::API_VERSION constant. Replace <SERVICE CLASS> with the class that is associated with the service. For example,

echo DTS\eBaySDK\Trading\Services\TradingService::API_VERSION;