+ if(substr_count(self::$FILE_NAME, '.') === 0) {
+ self::$FILE_EXTENSION = null;
+ } elseif(substr_count(self::$FILE_NAME, '.') > 1) {
+ self::$FILE_EXTENSION = $extension[count($extension)-2].'.'.$extension[count($extension)-1];
+ } else {
+ self::$FILE_EXTENSION = $extension[count($extension)-1];
+ }