# Google API Core Client - Class OptionsInterface (1.43.0)

1.43.0 (latest) 1.42.5 1.40.0 1.38.2 1.36.1 1.35.1 Reference documentation and code samples for the Google API Core Client class OptionsInterface.

Classes which implement this interface in this package:

- [CallOptions](https://docs.cloud.google.com/php/docs/reference/gax/latest/Options.CallOptions)
- [ClientOptions](https://docs.cloud.google.com/php/docs/reference/gax/latest/Options.ClientOptions)
- [TransportOptions](https://docs.cloud.google.com/php/docs/reference/gax/latest/Options.TransportOptions)
- [TransportOptions\\GrpcFallbackTransportOptions](https://docs.cloud.google.com/php/docs/reference/gax/latest/Options.TransportOptions.GrpcFallbackTransportOptions)
- [TransportOptions\\GrpcTransportOptions](https://docs.cloud.google.com/php/docs/reference/gax/latest/Options.TransportOptions.GrpcTransportOptions)
- [TransportOptions\\RestTransportOptions](https://docs.cloud.google.com/php/docs/reference/gax/latest/Options.TransportOptions.RestTransportOptions)

## Namespace

Google \\ ApiCore \\ Options

## Methods

### toArray