Facebook Speeds Development With ?HipHop Virtual Machine?, A 60% Faster PHP Executor

"Consider that many Facebook engineers spend their days developing PHP code in an endless edit-reload-debug cycle.�The difference between 8-second and 5-second reloads due to switching from HipHop interpreter to the HipHop Virtual Machine makes a big difference to productivity." That's how Facebook explains the significance of its new PHP executor, HipHop Virtual Machine, announced today.�It's 60 percent faster than the HipHop�interpreter Facebook currently uses, with a 90 percent reduction in memory cost. HHVM�will improve the performance of Facebook's code and speed up the development process without forcing Facebook to switch off of PHP, which its engineers are trained in.

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