FrankenPHP: a modern app server for PHP and Symfony apps

by Kévin Dunglas

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A modern app server for PHP and Symfony https://frankenphp.dev

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➔ PHP API Platform creator, Symfony maintainer ➔ GO Go core contributor, Mercure.rocks and Vulcain.rocks creator ➔ C PHP core contributor Kévin Dunglas: Polyglot Dev @dunglas

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Web and Cloud Experts ➔ 100% employee-owned co-op ✊ ➔ Democratically managed 💬 ➔ 70 people 🦄 ➔ Distributed company 🌎 ➔ [email protected] 💌

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FrankenPHP A modern app server for PHP and Symfony ➔ Built for containers ➔ Worker mode ➔ 103 Early Hints support ➔ Real-time support (Mercure module) ➔ Compatible with all existing PHP apps: progressive enhancement

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Symfony and Containers

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Containers: Which SAPI? Server Application Programming Interface: interface between the PHP interpreter and web servers ➔ Apache module ➔ FPM (FastCGI Process Manager) ➔ CGI (Common Gateway Interface) ➔ NGINX Unit (not the NGINX you’re used to) ➔ …

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➔ Simple ➔ Web server + PHP = 1 service ➔ Default solution for containers DRAWBACKS: ➔ Works only with Apache ➔ Less performant than FPM Apache Module

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FPM ➔ Most popular SAPI ➔ Supported by most web servers: Caddy, NGINX, Apache… DRAWBACKS: ➔ External service ➔ Require a UNIX or a TCP socket ➔ Hard to containerize

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Can We Do Better?!

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➔ Perfect for containers ◆ Just 1 service ◆ No external dependencies ◆ Batteries included ➔ Contains the Caddy web server ◆ All Caddy features and modules ◆ Beneﬁts from Go features ◆ Extensible: in Go, in C, in PHP ➔ Prod, CI and dev FrankenPHP: Modern PHP App Server

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➔ Standalone Go library ➔ Embed PHP in your Go programs ➔ New SAPI for Go net/http ◆ Caddy, Symfony CLI, Traeﬁk, K8S… ◆ Your custom Go app ➔ Caddy module using the library ➔ Unique features The ❤ of FrankenPHP: A New SAPI For Go

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➔ Easy to conﬁgure ➔ Cloud native: API, hot conﬁg reloading… ➔ Automatic HTTPS ➔ HTTP/2, HTTP/3, Early Hints… ➔ Extensible with modules: Mercure, Vulcain, OAuth, OIDC… ➔ Prod ready ➔ Server of Symfony Docker ➔ Written in Go 😻: secure and fast Caddy: The New Kid on the Block

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➔ Compatible with existing PHP apps! ➔ 1 service, 1 minimal Docker image 😍 ➔ Also works without Docker ➔ Entirely conﬁgurable ◆ Caddyﬁle ◆ php.ini ➔ Free software (as in free speech ✊, and free beer 🍺) FrankenPHP: At a Glance

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Getting Started

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Getting Started

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Alternative: Symfony CLI ➔ Simple local web server ➔ Built-in TLS support ➔ Dev environments only ➔ Auto-detects and auto-conﬁgures: ● PHP FPM and CLI ● Docker Compose services: Postgres, MySQL, Mailcatcher, Redis, RabbitMQ… ➔ Works with any PHP app (even if not using SF) ➔ Written in Go 😻 @dunglas

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🧪 Symfony CLI X FrankenPHP

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FrankenPHP Superpower: The Worker Mode ➔ Boot your application once ➔ Keep it in memory ➔ Process incoming requests without having to boot your app again ➔ Relies on goroutines and channels ➔ Compatible with Symfony Runtime ➔ Somewhat similar to RoadRunner ➔ Unlike RoadRunner ◆ runs in process: no network calls, no gRPC ◆ uses plain old superglobals: no PSR-7

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Worker Script

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Starting the Worker Mode By default, one worker per CPU is started.

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The Runtime Component

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Symfony App in Worker Mode

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FrankenPHP: Worker Benchmark 🧪 ➔ Setup: ◆ Hello World Symfony app (prod mode) ◆ Caddy Web Server (HTTP/2) ◆ 3000 requests, 100 connected users ◆ Benchmark tool: K6 ➔ Average request duration: ◆ FPM: 9.45ms ◆ FrankenPHP (worker): 2.53ms ➔ Take it with a grain of salt, run your own!

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103 Early Hints

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Early Hints: Not Possible With PHP

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Early Hints: Possible With Go 👋

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Early Hints: Supported by FrankenPHP ⚡

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Early Hints: Symfony 6.3 ⚡

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Real-time

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FrankenPHP includes a Mercure hub!

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➔ Symfony (worker mode) ➔ API Platform (worker mode) ➔ Sulu (worker mode) ➔ Drupal ➔ Shopware ➔ WordPress ➔ All tested PHP extensions, including opcache and parallel Projects Known to Work With FrankenPHP

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➔ Test, test and test again ➔ Release a stable version when PHP 8.2 will be out ➔ 🚧 Add Windows support ➔ Add a built-in distributed HTTP cache server ➔ Add a built-in distributed cache system (like Memcache) ➔ Conquer the (PHP) world ➔ Contributions welcome! What’s next?!

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Try it, give it a star on GitHub... … and win Laury’s merch at our booth! Thanks! frankenphp.dev @dunglas