--- title: keyboardButtonCallback --- ## Constructor: keyboardButtonCallback [Back to constructors index](index.md) ### Attributes: | Name | Type | Required | |----------|:-------------:|---------:| |text|[string](../types/string.md) | Required| |data|[bytes](../types/bytes.md) | Required| ### Type: [KeyboardButton](../types/KeyboardButton.md) ### Example: ``` $keyboardButtonCallback = ['_' => keyboardButtonCallback', 'text' => string, 'data' => bytes, ]; ```