[Tutorial PHP]Afisare sistem operare

Code:
<?php

 

 function os($sistem_operare) {

    $sisteme = 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 Vista' => '(Windows NT 6.0)|(Windows Vista)',

       'Windows 2003' => '(Windows NT 5.2)',

       '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)',

       'Macintosh'=>'(Mac_PowerPC)|(Macintosh)',

       'QNX'=>'QNX',

       'BeOS'=>'BeOS',

       'OS/2'=>'OS/2',

       'Search Bot'=>'(nuhk)|(Googlebot)|(Yammybot)|(Openbot)|(Slurp/cat)|(msnbot)|(ia_archiver)'

    );

 

    foreach($sisteme as $os=>$pattern)

       if(eregi($pattern, $sistem_operare))

          return $os;

 

    return 'Necunoscut';

 }

 

 $os = os($_SERVER['HTTP_USER_AGENT']);

 echo "Folositi sitemul de operare $os";

 

 ?>