Before You Start

Make sure that you are familiar with basic OBS concepts, such as buckets, objects, access keys (AKs/SKs), and endpoints and domain names.
Some features are available only in certain regions. If the HTTP status code 405 is returned when you call an API, check whether the feature is supported in the region. For details, refer to Functions or submit a service ticket to contact technical support.

The following table lists the feature changes for the PHP SDK.

**Table 1** Feature changes for the PHP SDK
Version	Change Type	Feature Changes
Version 3.24.9	Document optimization	Document optimization: Added the operation guide for deleting fragments of a multipart upload. Added the operation guide for creating and listing parallel file systems. Added the sample code for uploading objects in batches. Added the sample code for copying objects in batches. Added the sample code for downloading objects in batches. Added the sample code for restoring objects in batches.

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