在浏览器中运行该例时，结果如图3所示。
 |
| 图3：运行“show tables”查询之后的结果 |
本例中使用了nasa数据库，这是我为NASA Ames演讲而创建的数据库（我用了“火箭科学”的笑话，因为当时我的听众是一群火箭科学家）。该数据库只有一个名为mission的表，其中包含两列，分别代表每项由NASA发起但已撤消的任务名称和年份。
在数据网格中单击名称列即可按名称排序，如图4所示。
 |
| 图4：显示mission表中的数据 |
然后单击年份列，以按照年份排列数据，如图5所示。
 |
| 图5：迪斯科球式查询 |
在过去几年中，我们似乎并未发起任何任务。
后续步骤
至此，本例已可应用于许多场合。在前台Flex应用中，可以添加一些对用户更友好的控件，以添加、删除或更新表格。甚至可以提供数据过滤功能或者编辑功能，以修改表格中的数据。数据网格控件非常强大，可以处理现场编辑任务。也可以用在完全不同的场合，例如使用Flex绘图软件包执行数据分析和可视化工作。
总结
PHP和Flex的结合潜力无限。利用PHP可以方便地在后台发布web服务，可以单独发布，可以与HTML前台程序一起发布。PHPMyAdmin带有web服务接口扩展功能，使任何人都能以Flex、Ajax、Silverlight、桌面小部件或其他任何技术编写前台程序。Flex为PHP开发人员提供了强大的前台工具。它避开了困扰Ajax开发人员的客户端不兼容问题。Flex 2并非只能使用特定的服务器技术，因此Flex应用程序编译完成后，它就可以部署在任何场合，因为它只是一个SWF文件。可以看到，利用简单的web服务对象和强大的E4X语言扩展，就可以让Flex应用程序方便地与几乎任何一种后台程序进行通讯。
读者不妨一试，如果您使用PHP和Flex创建了有趣的程序，请告诉我，也许我们可以合写一篇文章来介绍它。
资源
Flex是一种开源Flash应用程序开发语言，由Adobe创建。
MDB2 PEAR模块是我用来访问数据库的方法
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