hhvm/hack-hhvm-docs — pull request #397 by SiebelsTim (2014-10-16 19:38:22+00:00)
Title: Fix "not supported" for variables

We support all global variables, so just return true for them

Checking if they are set doesn't work with variable variables inside function
http://3v4l.org/WcL7P

Proof that we support everything:
http://3v4l.org/sUIPi#vhhvm-330

Undefined for
* $php_errormsg
* $http_response_header

because of 3v4l.org (php doesn't find them either)

We support them in reality