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by throwaway40324 2393 days ago
It must be just a coincidence that PHP 7.4 was released today, and surely FB doesnt rely on PHP version updates to latest, right?

Just speculating..

Edit: that twitter thread is quite entertaining

1 comments

Facebook doesn't run vanilla PHP. It runs on Hack, a language developed from PHP that runs on HHVM, a JIT VM it developed:

https://engineering.fb.com/developer-tools/hack-a-new-progra...

Right, but up until after Hackv3.3, PHP code was supported, which support ended 9 days ago.

"HHVM v3.30 will be the last release series where HHVM aims to support PHP. The key dates are...

2019-11-19: expected end of support for v3.30"

https://hhvm.com/blog/2018/09/12/end-of-php-support-future-o...

Note: I really dont believe my above speculation is related, just thought it was an interesting coincidence, at best.