mvc-expert

PHP MVC Expert & Modernization

English | Bahasa Indonesia

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English

Orchestration & Integration

Connects and orchestrates with relevant domain skills like brainstorming, zero-to-prod-orchestrator, and project-context-mapper to ensure cohesive execution.

Description

This skill provides the agent with structured protocols, coding patterns, and architectural guidelines to audit, refactor, and modernize legacy/obsolete PHP codebases (plain spaghetti PHP) into a clean, modern, secure, and scalable Model-View-Controller (MVC) structure adhering to PSR standards and modern PHP (v8.2+) capabilities.

Instructions

1. Audit Protocol for Legacy PHP

Before writing new structures, run a detailed audit on the legacy files to map out:

• Routing & Entry Points: Identify raw .php files acting as endpoints (e.g., about.php, contact.php, process.php).
• Data Access & SQL: Find inline SQL queries, string-concatenated queries (SQL Injection risks), and direct mysqli or mysql_* usages.
• Session & Global State: Identify direct session mutations ($_SESSION), raw cookies, and unchecked global variables ($_GET, $_POST, $_REQUEST).
• Spaghetti Mixing: Locate files where database connection, business logic, session validation, and HTML rendering are in a single script.
• Hardcoded Secrets: Identify database credentials, API keys, and configurations defined inside individual files.

2. Modernization Strategy & Composer Setup

Apply a standard project directory structure and initialize dependency management:

• PSR-4 Autoloading: Create a composer.json file and define namespace mappings:

  {
    "autoload": {
      "psr-4": {
        "App\\": "src/"
      }
    }
  }
  

• Standard Directory Structure:
  • public/: Single entry point containing index.php (Front Controller), assets (CSS, JS), and uploaded files.
  • src/: Root namespace for MVC structure (src/Models/, src/Controllers/, src/Views/, src/Core/).
  • config/: Database configurations, router configurations, and app configurations.
  • .env & .env.example: Store environment configurations.