怎样在PHP 中运用 SimpleXML 处理任务
php(做为现在的主流开发语言)是一种基于服务端来创建动态网站的脚本语言，您可以用php(做为现在的主流开发语言)和HTML生成网站主页。当一个访问者打开主页时，服务端便执行php(做为现在的主流开发语言)的命令并将执行结 果发送至访问者的浏览器中，这类似于ASP和CoildFusion。
然而php(做为现在的主流开发语言)和他们不同之处在于php(做为现在的主流开发语言)开放源码和跨越平台，php(做为现在的主流开发语言)可以运行在 WINDOWS NT和多种版本的UNIX上。它不需要任何预先处理而快速反馈结果，它也不需要mod_perl的调整来使您的服务器的内存映象减小。
php(做为现在的主流开发语言)消耗的资源较 少，当php(做为现在的主流开发语言)作为apache(Unix平台最流行的WEB服务器平台) Web服务器一部分时，运行代码不需要调用外部二进制程序，服务器不需要承担任何额外的负担。
除了能够操作您的页面外，php(做为现在的主流开发语言)还能发送HIIP的标题。您可以设置cookie,管理数字签名和重定向用户，而且它提供了极好的连通性到其它数据库（还有DBC），集成各种外部库来做用PDF文档解析xml(标准化越来越近了)的任何事情。
php(做为现在的主流开发语言)的编程语言类似与C和Perl。在使用它们之前您没必要声明任何变量，而且建立数组和Hash是很简单的事情。php(做为现在的主流开发语言)还有一些面向对象的特征，可以为组织和打包您的代码提供很好的帮助。
php(做为现在的主流开发语言) 版本 5 引入了 Simplexml(标准化越来越近了)，一种用于读写 xml(标准化越来越近了) 的新的应用程序编程接口（API）。它使 php(做为现在的主流开发语言) 页面能够以 php(做为现在的主流开发语言) 友好的语法来查询、搜索、修改和重新发布 xml(标准化越来越近了)。
Simplexml(标准化越来越近了) 对于 php(做为现在的主流开发语言) 程序员的工具箱来说是个不错新玩意。适用的情况很多。具体而言，它能够很好地处理简单的、类似记录的数据，要比使用 DOM 简单得多。可以自己尝试一下 Simplexml(标准化越来越近了)。应该是 可以成为 php(做为现在的主流开发语言) 中一种可靠、健壮的 xml(标准化越来越近了) 处理方法。
下面，假设需要一个 php(做为现在的主流开发语言) 页面将 RSS 提要（feed）转化成 HTML，我们开始使用 Simplexml(标准化越来越近了)来完成，如何下手呢，接着看吧！
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