I'm currently working on a project written in Zend Framework and while trying to secure sessions, I noticed that this utility does not have any class that collects everything about the visitor and the request. The problem is quite serious, as many values in $_SERVER depend on the installed server software, PHP mode (module, CGI, FastCGI...) and many other things. This means that the scripts should not rely on them without a proper processing, because it can even crash whole website after the software change (I experienced it not so long ago). Thankfully, I noticed that in the old OPF code, I have a class called opfVisit that does this job. Now it's a part of the new Open Power Classes project :).