Zephir
Compiled high level language aimed to the creation of C-extensions
...Zephir combines static and dynamic typing in a friendly language that is compiled down to machine code using the industry-standard compilers. Despite being a compiled language, it does not allow you to use pointers, it provides a garbage collector to avoid memory leaks and more. Zephir takes advantage of the extension ecosystem available in PHP to allow you to create your own extensions as shared libraries in Linux/OSX and DLLs on Windows. Zephir, an open-source, high-level language designed to ease the creation and maintainability of extensions for PHP with a focus on type and memory safety. ...