facebook/wordpress — pull request #349 by niallkennedy (2012-12-13 00:06:51+00:00)
Title: PHP SDK 3.2.2. improved nginx support

update Facebook PHP SDK.

* use `empty()` for signed request value check
* avoid trying to reuse spent authorization codes
* add check for incoming requests on port 443 instead of relying on Apache-specific `$_SERVER['HTTPS']`. improves nginx compatibility