Torrent::file PHP Method

    private function file($file, $piece_length)
    {
        if (!($handle = self::fopen($file, $size = self::filesize($file)))) {
            return self::set_error(new Exception('Failed to open file: "' . $file . '"'));
        }
        if (self::is_url($file)) {
            $this->url_list($file);
        }
        $path = self::path_explode($file);
        return array('length' => $size, 'name' => end($path), 'piece length' => $piece_length, 'pieces' => $this->pieces($handle, $piece_length));
    }