mir-backend-php

Make It Right (PHP runtime tier). Zend Engine / PHP 8.2+ runtime reliability footguns that are shared across EVERY PHP backend framework (Laravel, Symfony, WordPress, Slim, Lumen) — distinct from the generic backend gates and from any one framework's mechanics. Covers: shared-nothing request lifecycle and why static/global state does not persist, FPM worker model and concurrency = pm.max_children (not threads), long-running runtime modes (Swoole/RoadRunner/FrankenPHP/Octane) and the state-bleed/memory-leak inversion they introduce, max_execution_time and memory_limit per request, opcache correctness in production, persistent DB connection caveats, and PHP's error/exception model in prod. TRIGGER when the backend runtime is PHP — sits between mir-backend (generic) and the framework module (e.g. mir-backend-php-laravel). SKIP for Node/JVM/Go/Rust/.NET/Python/Ruby/BEAM runtimes (each has its own mir-backend-<runtime> tier), and for framework-library mechanics (those live in the framework module).