Cara Mendapatkan Info OS Menggunakan PHP

Code

<?php/*Author: Tommy Ardianto Website: http://indo-next.blogspot.com*/function 
getOS($userAgent) {  // Create list of operating systems with operating syste
m name as array key   $oses = array (     'iPhone' => '(iPhone)',     'Window
s 3.11' => 'Win16',     'Windows 95' => '(Windows 95)|(Win95)|(Windows_95)', 
// Use regular expressions as value to identify operating system     'Windows 
98' => '(Windows 98)|(Win98)',     'Windows 2000' => '(Windows NT 5.0)|(Wind
ows 2000)',     'Windows XP' => '(Windows NT 5.1)|(Windows XP)',     'Windows
 2003' => '(Windows NT 5.2)',     'Windows Vista' => '(Windows NT 6.0)|(Windows 
Vista)',     'Windows 7' => '(Windows NT 6.1)|(Windows 7)',  
   'Windows NT 4.0' => '(Windows NT 4.0)|(WinNT4.0)|(WinNT)|(Windows NT)',  
   'Windows ME' => 'Windows ME',     'Open BSD'=>'OpenBSD',     
'Sun OS'=>'SunOS',     'Linux'=>'(Linux)|(X11)',     'Safari' => '(Safari)',   
  'Macintosh'=>'(Mac_PowerPC)|(Macintosh)',     'QNX'=>'QNX',     'BeOS'=>'BeOS', 
    'OS/2'=>'OS/2',     'Search Bot'=>'(nuhk)|(Googlebot)|(Yammybot)|(Openbot)
|(Slurp/cat)|(msnbot)|(ia_archiver)'   );   foreach($oses as $os=>$pattern){ 
// Loop through $oses array   // Use regular expressions to check operating 
system type     if(eregi($pattern, $userAgent)) { // Check if a value in
 $oses array matches current user agent.       return $os; // Operating system
 was matched so return $oses key     }   }   return 'Unknown'; // Cannot find 
operating system so return Unknown}$my_os = getOS($_SERVER['HTTP_USER_AGENT'])
;echo $my_os;?>