MadelineProtoDocs/docs/API_docs/constructors/keyboardButtonCallback.md
2019-12-27 17:48:04 +01:00

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---
title: keyboardButtonCallback
description: Callback button
image: https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png
---
# Constructor: keyboardButtonCallback
[Back to constructors index](index.md)
Callback button
### Attributes:
| Name | Type | Required | Description |
|----------|---------------|----------|-------------|
|text|[string](../types/string.md) | Yes|Button text|
|data|[bytes](../types/bytes.md) | Yes|Callback data|
### Type: [KeyboardButton](../types/KeyboardButton.md)
### Example:
```php
$keyboardButtonCallback = ['_' => 'keyboardButtonCallback', 'text' => 'string', 'data' => 'bytes'];
```
Or, if you're into Lua:
```lua
keyboardButtonCallback={_='keyboardButtonCallback', text='string', data='bytes'}
```