After reading Stan Vassilev's post on Practical Uses for the PHP Tokenizer, I got to thinking about his example of a preprocessor. It makes a lot of sense for the library developer. They could easily create multiple versions of their code depending on PHP version, target platform, backend database, etc. So I started working on my own implementation of a preprocessor with the goal of making it easy to add plugins for additional functionality. It was during the construction of the core of the preprocessor, that it hit me: why can't we implement new language features in the preprocessor. The first things that came to mind for me were traits and scalar type hints. So without further ado, I present version 0.1.0-dev of PPP (with its own doubly recursive meaning: PPP PHP PreProcessor).

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