The asset data contains basic asset information, an asset manifest, the extended metadata, and the asset content (Figure 3).

资产数据包含基本资产信息，一个资产清单、已扩展元数据和资产内容(图3)。

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Let's consume this document with the following PHP code, which effectively loops through the entries in the manifest of the ZIP and extracts the XML document with relevant data.

下面的PHP代码使用了这个文档，它对ZIP清单中的项进行遍历，并提取具有相关数据的XML文档。

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The purpose of the manifest is to provide for data integrity of the package.

清单的作用是提供包的数据完整性。

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