Just because a PHP framework is lightweight it doesn't mean it lacks power. Take the DooPHP framework. Short for Do OOP in PHP, DooPHP is a self-described lightweight, open source framework that enables you to build simple dynamic websites quickly. In fact, Developer.com's PHP Contributing Editor Jason Gilmore identified DooPHP as one of his top 10 lightweight frameworks for PHP development.
Now, Jason has dedicated an entire PHP framework review to DooPHP on PHPBuilder.com.
He explains his focus on DooPHP and PHP frameworks in general like this:
I'm an advocate of framework-driven development in general, urging even beginning PHP users to explore the various available solutions and adopt the framework which best resonates with them as soon as possible.
He goes on to demonstrate how you can leverage the seven main DooPHP features (listed below) to create a simple yet dynamic, database-integrated website.