code: public static function getKernelVersion()
  		{
  			$wmi = Windows::getInstance();
  
  			foreach ($wmi->ExecQuery("SELECT WindowsVersion FROM Win32_Process WHERE Handle = 0") as $process) {
  				return $process->WindowsVersion;
  			}
  
  			return "Unknown";
  		}
docs: Gets the Kernel Version of the Operating System
  
  @return string