使用 PHP 的 tidy_clean_repair() 对 HTML 进行压缩

    $options = array("clean" => true,
              "drop-proprietary-attributes" => true,
              "drop-font-tags" => true,
              "drop-empty-paras" => true,
              "hide-comments" => true,
              "join-classes" => true,
              "join-styles" => true);

    $tidy = tidy_parse_file("http://www.php.net/", $options);
    tidy_clean_repair($tidy);
    echo $tidy;
?>