MadelineProtoDocs/old_docs/API_docs_v66/methods/messages_getDocumentByHash.md

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---
title: messages.getDocumentByHash
description: Get document by SHA256 hash
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image: https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png
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---
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# Method: messages.getDocumentByHash
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[Back to methods index](index.md)
Get document by SHA256 hash
### Parameters:
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| Name | Type | Description | Required |
|----------|---------------|-------------|----------|
|sha256|[bytes](../types/bytes.md) | `hash('sha256', $filename, true);` | Yes|
|size|[int](../types/int.md) | The file size | Yes|
|mime\_type|[string](../types/string.md) | The mime type of the file | Yes|
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### Return type: [Document](../types/Document.md)
### Can bots use this method: **YES**
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### MadelineProto Example ([now async for huge speed and parallelism!](https://docs.madelineproto.xyz/docs/ASYNC.html)):
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```php
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if (!file_exists('madeline.php')) {
copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
}
include 'madeline.php';
$MadelineProto = new \danog\MadelineProto\API('session.madeline');
$MadelineProto->start();
$Document = $MadelineProto->messages->getDocumentByHash(['sha256' => 'bytes', 'size' => int, 'mime_type' => 'string', ]);
```
Or, if you're into Lua:
```lua
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Document = messages.getDocumentByHash({sha256='bytes', size=int, mime_type='string', })
```
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### Errors
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| Code | Type | Description |
|------|----------|---------------|
|400|SHA256_HASH_INVALID|The provided SHA256 hash is invalid|
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