URL Refactoring in Practice: From Parameter Hell to SEO Heaven

How do you gracefully refactor URLs mid-project to achieve a RESTful style and SEO optimization? This article uses a PHP project as a case study to explore the evolution from confusing query parameter URLs (e.g., `content?tag_id=104`) to clean, readable, path-based URLs (e.g., `tag/104/windows-10`). It compares various URL design patterns and presents a 'dual-track' best practice that accommodates both complex filtering and code reusability, helping you build a URL structure loved by both users and search engines.