What language is the Facebook Questions application written in?
What languages are F开发者_开发技巧acebook Questions coded in? PHP? What else?
Facebook in general uses a compiled version of PHP known as HPHP, or HipHop, which basically converts PHP code into compiled c++ code: http://blogs.oracle.com/opal/2010/02/facebooks_hphp_initial_comment.html
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