PHP圆桌面应用程序
PHP桌面应用程序?
http://docs.php.net/manual/zh/intro-whatcando.php
编写桌面应用程序。对于有着图形界面的桌面应用程序来说，PHP 或许不是一种最好的语言，但是如果用户非常精通 PHP，并且希望在客户端应用程序中使用 PHP 的一些高级特性，可以利用 PHP-GTK 来编写这些程序。用这种方法，还可以编写跨平台的应用程序。PHP-GTK 是 PHP 的一个扩展，在通常发布的 PHP 包中并不包含它。如果对 PHP-GTK 感兴趣，请访问其? 网站以获取更多信息。
问题：
1.PHP语言可以编写，怎样的桌面应用程序？
给个实例。
2.ubuntu12.04 LTS 怎样安装PHP-GTK？
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