Book: Decoupled PHP — Clean and Hexagonal Architecture for Applications That Outlive the Framework Also by me: Thinking in Go (2-book series) — Complete Guide to Go Programming + Hexagonal Architecture in Go My project: Hermes IDE | GitHub — an IDE for developers who ship with Claude Code and other AI coding tools Me: xgabriel.com | GitHub You want to call a Go service from PHP. The Go team built it with gRPC. You search "PHP gRPC tutorial" and get fifteen blog posts showing the same SayHello unary call. None of them mention streaming. The Go team's chat service is bidirectional. Your PHP service has to talk to it. Now what? Here's what nobody tells you. PHP gRPC bidi streaming works. The grpc extension supports it. The protobuf compiler emits the right stubs. The only catch is that the official documentation pretends streaming doesn't exist past the unary case.…