protoc --plugin=protoc-gen-php-grpc --php_out=<OUTPUT DIRECTORY> --php-grpc_out=<OUTPUT DIRECTORY> simple.proto protoc-gen-php-grpc plugin can be downloaded from the roadrunner releases page. #Configuration version: "2.7" grpc: # GRPC address to listen # # This option is required listen: "tcp://127.0.0.1:9001" # Proto file to use, multiply files supported [SINCE 2.6] # # This option is required pr