Does PHP have a function to detect the OS it's running on?

Question

I wouldn\'t know under what keyword to look for this in the PHP database, so I\'m asking here.

Reason I want to know is because of how different Operating Systems handle

Answer 1

 '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 7.0)',
        '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)'
);

// Loop through the array of user agents and matching operating systems
foreach($OSList as $CurrOS=>$Match)
{
        // Find a match
        if (eregi($Match, $_SERVER['HTTP_USER_AGENT']))
        {
                // We found the correct match
                break;
        }
}
// You are using Windows Vista
echo "You are using ".$CurrOS;
?>