function image_quality_reduce($file)
    {
        global $PowerBB;
        $quality = 30;
        $file_extension = explode('.', $file);
        $ext = strtolower($file_extension[count($file_extension) - 1]);
        if(in_array($ext, array('jpg', 'jpeg', 'png', 'gif')))
        {
            $image = imagecreatefromstring(file_get_contents($file));
            $ext == 'jpg' || $ext == 'jpeg' ? imagejpeg($image, $file, $quality) : null;
            $ext == 'png' ? imagepng($image, $file, $quality) : null;
            $ext == 'gif' ? imagegif($image, $file, $quality) : null;

            return $ext;
        }
        else
        {
            return false;
        }

    }