Detectec Operating System on php [web]

[codes=php]
$OSList = array
(
  ‘Windows 3.11’ => ‘Win16’,
  ‘Windows 95’ => ‘(Windows 95)|(Win95)|(Windows_95)’,
  ‘Windows 98’ => ‘(Windows 98)|(Win98)’,
  ‘Windows 2000’ => ‘(Windows NT 5.0)|(Windows 2000)’,
  ‘Windows XP’ => ‘(Windows NT 5.1)|(Windows XP)’,
  ‘Windows Server 2003’ => ‘(Windows NT 5.2)’,
  ‘Windows Vista’ => ‘(Windows NT 6.0)’,
  ‘Windows 7’ => ‘(Windows NT 6.1)’,
  ‘Windows NT 4.0’ => ‘(Windows NT 4.0)|(WinNT4.0)|(WinNT)|(Windows NT)’,
  ‘Windows ME’ => ‘Windows ME’,
  ‘Open BSD’ => ‘OpenBSD’,
  ‘Sun OS’ => ‘SunOS’,
  ‘Linux’ => ‘(Linux)|(X11)’,
  ‘Mac OS’ => ‘(Mac_PowerPC)|(Macintosh)’,
  ‘QNX’ => ‘QNX’,
  ‘BeOS’ => ‘BeOS’,
  ‘OS/2’ => ‘OS/2’,
  ‘Search Bot’=>'(nuhk)|(Googlebot)|(Yammybot)|(Openbot)|(Slurp)|(MSNBot)|(Ask Jeeves/Teoma)|(ia_archiver)’
);
  foreach($OSList as $CurrOS=>$Match)
  {
    if (eregi($Match, $_SERVER[‘HTTP_USER_AGENT’]))
    {
    break;
    }
  }
echo “OS: “.$CurrOS;
[/codes]