This is VK/KittenPHP-DB-Engine project, consisting of efficient PHP-to-C++ translator called "KPHP" or "KittenPHP", and several auxiliary high-performance "engines" (specialized non-relational databases), needed for its deployment. It has been developed since 2009 mostly by Vkontakte Ltd, operator of social network VK.COM, and thoroughfully tested in high-performance enviroments, until a version u