FrankenPHP is a Go binary that embeds the PHP interpreter and serves HTTP through Caddy. Worker mode keeps PHP processes warm — competing directly with RoadRunner and Octane.
It also speaks HTTP/3, ships with automatic HTTPS, and includes Mercure for server-sent events out of the box.
Single-binary deployment is a real ops win: copy one file plus the app, run it, done. Excellent fit for self-contained PHP apps and serverless-style deployments.