Taking PHP Seriously - Slack EngineeringSoyuz rocket delivered to the launchpad by train. Public domain photo by NASA Slack uses PHP for most of its server-side application logic, which is an unusual choice these days. Why did we choose to build a new project in this language? Should you? Most programmers who have only casually used PHP know two things about it: that it is a bad language, which they would never use if given the choice;
