PHP 4和5的目录层次结构不同，否则我们介绍的这些情景就没有任何区别了。

PHP V4 and V5 differ in their directory layout. Otherwise, it makes no difference to the scenario described here.

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然后，我们介绍一个旅程预订情景并描述如何把我们在这里讨论的技术用于构建复杂程度各不相同的Web服务。

Then we introduce a travel reservation scenario, and see how the technologies we'll discuss here can be used to build web services of various levels of sophistication.

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后续的文章将会介绍如何用RosettaNet PIP3A4和BPEL4WS创建一个扩展的电子商务情景。

The following articles will look at creating an extended e-business scenario using the RosettaNet PIP3A4 and BPEL4WS.

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