private function _get_Win32_OperatingSystem()
    {
        if ($this->_Win32_OperatingSystem === null) $this->_Win32_OperatingSystem = CommonFunctions::getWMI($this->_wmi, 'Win32_OperatingSystem', array('CodeSet', 'Locale', 'LastBootUpTime', 'LocalDateTime', 'Version', 'ServicePackMajorVersion', 'Caption', 'OSArchitecture', 'TotalVisibleMemorySize', 'FreePhysicalMemory'));
        return $this->_Win32_OperatingSystem;
    }
private function _get_Win32_OperatingSystem()
    {
        if ($this->_Win32_OperatingSystem === null) $this->_Win32_OperatingSystem = CommonFunctions::getWMI($this->_wmi, 'Win32_OperatingSystem', array('CodeSet', 'Locale', 'LastBootUpTime', 'LocalDateTime', 'Version', 'ServicePackMajorVersion', 'Caption', 'OSArchitecture', 'TotalVisibleMemorySize', 'FreePhysicalMemory'));
        return $this->_Win32_OperatingSystem;
    }
private function _get_Win32_OperatingSystem ( ) { if ( $ this -> _Win32_OperatingSystem === null ) $ this -> _Win32_OperatingSystem = CommonFunctions :: getWMI ( $ this -> _wmi , 'Win32_OperatingSystem' , array ( 'CodeSet' , 'Locale' , 'LastBootUpTime' , 'LocalDateTime' , 'Version' , 'ServicePackMajorVersion' , 'Caption' , 'OSArchitecture' , 'TotalVisibleMemorySize' , 'FreePhysicalMemory' ) ) ; return $ this -> _Win32_OperatingSystem ; }
reads the data from WMI Win32_OperatingSystem

@return array
reads the data from WMI Win32_OperatingSystem