# danog\MadelineProto\EventHandler\Query\ButtonQuery: Represents a query sent by the user by clicking on a button.

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> Author: Daniil Gentili <daniil@daniil.it>  
  

Represents a query sent by the user by clicking on a button.  



## Properties
* `$data`: `string` Data associated with the callback button. Be aware that a bad client can send arbitrary data in this field.
* `$matches`: `list<string>` Regex matches, if a filter regex is present.
* `$matchesAll`: `array<array-key, (array<array-key, (list{string, int} | null | string)> | mixed)>` 
Regex matches, if a filter multiple match regex is present
* `$queryId`: `int` Query ID
* `$userId`: `int` ID of the user that pressed the button
* `$chatInstance`: `int` Global identifier, uniquely corresponding to the chat to which the message with the callback button was sent. Useful for high scores in games.

## Method list:
* [`answer(?string $message = NULL, bool $alert = false, (string|null) $url = NULL, int $cacheTime = 300): bool`](#answer)

## Methods:
### <a name="answer"></a> `answer(?string $message = NULL, bool $alert = false, (string|null) $url = NULL, int $cacheTime = 300): bool`




Parameters:

* `$message`: `?string` Popup to show  
* `$alert`: `bool` Whether to show the message as a popup instead of a toast notification  
* `$url`: `(string|null)` URL to open  
* `$cacheTime`: `int` Cache validity (default set to 5 min based on telegram official docs ...)  



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