Product Decisions This Supports

Enables standardization of HTTP message handling across middleware-based architectures, ensuring compatibility with PSR-7 ecosystem tools (e.g., Slim, Mezzio, Guzzle clients)
Eliminates custom HTTP implementation risks – reduces bugs and maintenance overhead by leveraging a battle-tested PSR-7 reference implementation
Critical for roadmap items involving API gateways, microservices, or cross-framework integrations where consistent HTTP semantics are non-negotiable
Clear "buy" decision over "build": avoids reinventing core HTTP semantics while aligning with industry standards maintained by the PHP-FIG

When to Consider This Package

✅ When building middleware-driven applications requiring PSR-15 compatibility (e.g., authentication, logging, routing layers)
✅ When integrating third-party tools that explicitly require PSR-7 objects (e.g., OpenTelemetry, Sentry, or custom monitoring systems)
✅ For greenfield projects prioritizing interoperability and future-proofing against PHP ecosystem evolution
❌ When using frameworks with built-in PSR-7 support (e.g., Symfony with symfony/psr7-bridge, though native Symfony components don't require it)
❌ For trivial scripts or monolithic applications where raw superglobals suffice and middleware patterns aren't used
❌ If the team lacks PSR standard familiarity – adds abstraction layer complexity without clear middleware use cases