src/Zf2FileUploader/Filter/Thumbnail/PathFilter.php
public function filter($value)
    {
        $pathInfo = pathinfo($value);
        return sprintf('%s/%s_%sx%s.%s', $pathInfo['dirname'], $pathInfo['filename'],
                                         $this->width, $this->height, $pathInfo['extension']);
    }
public function filter($value)
    {
        $pathInfo = pathinfo($value);
        return sprintf('%s/%s_%sx%s.%s', $pathInfo['dirname'], $pathInfo['filename'],
                                         $this->width, $this->height, $pathInfo['extension']);
    }
Returns the result of filtering $value

@param  mixed $value It is must be path to file on FS
@throws Exception\RuntimeException If filtering $value is impossible
@return mixed