Facebook Accelerates PHP with HipHop Virtual Machine

“Facebook is a big user of PHP throughout its infrastructure,
but they don’t use quite the same same PHP that the rest of us use.
A year and a half ago they launched HipHop,their own open source
runtime for PHP.

Last week, they officially launched the HipHop virtual machine
(hhvm) which will make HipHop PHP execution faster than ever.

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