public static function getRangeAll()
    {
        $sheetObj = self::validSheetObj();
        
        return self::num2alpha(self::$_offsetCol+1). '1:'. $sheetObj->getHighestColumn(). $sheetObj->getHighestRow();
    }
public static function getRangeAll()
    {
        $sheetObj = self::validSheetObj();
        
        return self::num2alpha(self::$_offsetCol+1). '1:'. $sheetObj->getHighestColumn(). $sheetObj->getHighestRow();
    }
public static function getRangeAll ( ) { $ sheetObj = self :: validSheetObj ( ) ; return self :: num2alpha ( self :: $ _offsetCol + 1 ) . '1:' . $ sheetObj -> getHighestColumn ( ) . $ sheetObj -> getHighestRow ( ) ; }
Get Range of all actived cells from the actived sheet

@return string Range string
Get Range of all actived cells from the actived sheet