See Why You Should Learn a PHP Framework

Whole-heartedly disagree. Of all web languages, PHP is the one that needs a framework the least.

For one thing, PHP abstracts a lot to begin with. For another, there are so many libraries available, that it's much easier to just tie libraries together.

Here's a good dev process:

- Create index.php, which includes Composer's autoload.php - Get a routing library - Add each URI and its accompanying action, and introduce new libraries as you need to

That way, your code is very explicit. No magic, no functionality controlled by config files (or, worse, comments!) You can see what each object does by reading the source.