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HomeDocsClaude Developer Platform 21 Oct 2026
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php changedcli-sdks-libraries/sdks/php

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3939echo $textBlock->text;
4040```
4141 
42For authentication options including Workload Identity Federation, see [Authentication](https://platform.claude.com/docs/en/manage-claude/authentication). If your API key is a [personal or service account key](https://platform.claude.com/docs/en/manage-claude/authentication#key-types) with access to multiple workspaces, set the workspace ID in the `anthropic-workspace-id` request header; [Select a workspace](https://platform.claude.com/docs/en/manage-claude/authentication#select-a-workspace) shows the per-request option for this SDK.
42For authentication options including Workload Identity Federation, see [Authentication](https://platform.claude.com/docs/en/manage-claude/authentication). If your API key is a [personal or service account key](https://platform.claude.com/docs/en/manage-claude/authentication#key-types) that isn't scoped to a workspace, set the workspace ID in the `anthropic-workspace-id` request header; [Select a workspace](https://platform.claude.com/docs/en/manage-claude/authentication#select-a-workspace) shows the per-request option for this SDK.
4343 
4444## Value objects
4545 
46It is recommended to use the static `with` constructor `Base64ImageSource::with(data: "U3RhaW5sZXNzIHJvY2tz", ...)` and named parameters to initialize value objects.
46The recommended way to initialize value objects is the static `with` constructor `Base64ImageSource::with(data: "U3RhaW5sZXNzIHJvY2tz", ...)` with named parameters.
4747 
4848However, builders are also provided `(new Base64ImageSource)->withData("U3RhaW5sZXNzIHJvY2tz")`.
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103103 
104104Error codes are as follows:
105105 
106| Cause | Error Type |
106| Cause | Error type |
107107| ---------------- | ------------------------------ |
108108| HTTP 400 | `BadRequestException` |
109109| HTTP 401 | `AuthenticationException` |
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