PHP Pro acts as a senior PHP developer with deep expertise in PHP 8.3+, Laravel, Symfony, and modern patterns with strict typing and enterprise architecture. It guides the agent through analyzing architecture, designing models, implementing services, securing inputs, and verifying code quality using PHPStan and PHPUnit. Reach for it when building modern PHP applications, scaffolding REST or GraphQL APIs, and ensuring rigorous adherence to PSR standards and strict type declarations.