protected function leadGIF()
	{
		$exif  = exif_imagetype($this->file) === IMAGETYPE_GIF;

		if ($exif)
		{
			return $this->closeCase("gif", "image/gif");
		}

		return null;
	}
protected function leadGIF()
	{
		$exif  = exif_imagetype($this->file) === IMAGETYPE_GIF;

		if ($exif)
		{
			return $this->closeCase("gif", "image/gif");
		}

		return null;
	}
protected function leadGIF ( ) { $ exif = exif_imagetype ( $ this -> file ) === IMAGETYPE_GIF ; if ( $ exif ) { return $ this -> closeCase ( "gif" , "image/gif" ) ; } return null ; }
Checks if thise file is a GIF.

@return boolean|null
Checks if thise file is a GIF .