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44 lines
1.4 KiB
Markdown
44 lines
1.4 KiB
Markdown
---
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title: "channels.deleteTopicHistory"
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description: "Delete message history of a [forum topic](https://core.telegram.org/api/forum)"
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grand_parent: "Telegram RPC API"
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parent: "Methods"
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image: https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png
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redirect_from: /API_docs/methods/channels_deleteTopicHistory.html
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---
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# Method: channels.deleteTopicHistory
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[Back to methods index](index.html)
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Delete message history of a [forum topic](https://core.telegram.org/api/forum)
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### Parameters:
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| Name | Type | Description | Required |
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|----------|---------------|-------------|----------|
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|channel|[Username, chat ID, Update, Message or InputChannel](/API_docs/types/InputChannel.html) | Forum | Optional|
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|top\_msg\_id|[int](/API_docs/types/int.html) | Topic ID | Optional|
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### Return type: [messages.AffectedHistory](/API_docs/types/messages.AffectedHistory.html)
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### 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')) {
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copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
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}
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include 'madeline.php';
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$MadelineProto = new \danog\MadelineProto\API('session.madeline');
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$MadelineProto->start();
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$messages_AffectedHistory = $MadelineProto->channels->deleteTopicHistory(channel: $InputChannel, top_msg_id: $int, );
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```
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