title: Easiest Way OS Detection With PHP?
body: <p>I'm trying to figure out the visitor's OS is either a Windows, Mac or Linux using PHP(I don't need the version, distro info.. etc). There's several methods out there however they look a bit too complicated for this simple requirement.</p>
  
  <p>Are there any simple ways that could provide this sort of information yet still being quite reliable?</p>
  
  <p>Thanks in advance.</p>