PHP/Utility Function/get browser

Using get_browser()

   <source lang="html4strict">

<? $browser = get_browser(); if ($browser->platform == "WinXP") {

   print "You are using Windows XP.";

} elseif ($browser->platform == "MacOSX") {

   print "You are using Mac OS X.";

} else {

   print "You are using a different operating system.";

} ?>

 </source>