Someday I'll look back on this post and think it's super lame, but my recent submission of two tests for PHP's putenv() function made it into PHP_5_3! I've officially made a contribution it's a red letter day, folks. Without Atlanta PHP and PHP's Testfest, none of this would have been possible.

His tests ran with putenv() and the safe_mode_allowed_env_vars/safe_mode_protected_env_vars settings in use. You can see the inclusion in this commit message (by Lars Strojny).