There were many reasons for this one of them was HPHPc's flattened curve for further performance improvements. However, in early 2013 Facebook deprecated HPHPc in favor of the HipHop Virtual Machine (HHVM), which is a just-in-time (JIT) compilation-based execution engine for PHP, also developed by Facebook. īy many accounts HPHPc fulfilled its goals, especially within Facebook as it allowed to run much faster while using fewer resources. HPHPi and HPHPd were also open sourced in 2010. Running the code through HPHPi yields lower performance when compared to HPHPc, but the developer benefits were, at the time, worth having to maintain these two execution engines for production and development. These additions allow developers to run PHP code through the same logic provided by HPHPc while making it possible to interactively debug PHP code by defining watches, breakpoints, etc. Īs an addition to HPHPc, Facebook engineers also created a "developer mode" of HipHop (interpreted version of a PHP execution engine, known as HPHPi) and the HipHop debugger (known as HPHPd). HPHPc was originally open sourced in early 2010. A stated goal of HPHPc was to provide a high level of compatibility for Zend PHP, where most Zend-based PHP programs run unmodified on HPHPc. Increases in web page generation throughput by factors of up to six have been observed over the Zend PHP. As the development of HipHop progressed, it was realised that HipHop could substantially increase the speed of PHP applications in general. The original motivation behind HipHop was to save resources on Facebook servers, given the large PHP codebase of.
HPHPc consists mainly of C++, C and PHP source codes, and it is free and open-source software distributed under the PHP License. By using HPHPc as a source-to-source compiler, PHP code is translated into C++, compiled into a binary and run as an executable, as opposed to the PHP's usual execution path of PHP code being transformed into opcodes and interpreted. HipHop for PHP ( HPHPc) is a discontinued PHP transpiler created by Facebook.
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