<p>CodeIgniter 4 is a powerful PHP framework that is both lightweight and feature-rich.</p><h2>Why CodeIgniter 4?</h2><p>CI4 is a complete rewrite of the framework, built for PHP 8.1+. It features namespaces, autoloading, and a modern MVC architecture while staying true to its lightweight roots.</p><h2>Key Concepts</h2><ul><li>MVC Architecture with HMVC support</li><li>Services container for dependency management</li><li>Filters as middleware equivalent</li><li>Entity classes for data hydration</li><li>Built-in Query Builder</li></ul><p>Start building today!</p>