$finfo = finfo_open(FILEINFO_MIME_TYPE);
self::$FILE_MIME = finfo_file($finfo, self::$TEMP_FILE);
$extension = explode('.',self::$FILE_NAME,2);
$finfo = finfo_open(FILEINFO_MIME_TYPE);
self::$FILE_MIME = finfo_file($finfo, self::$TEMP_FILE);
$extension = explode('.',self::$FILE_NAME,2);