InlineKeyboardButton.php
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InlineKeyboardButton.php
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	<?php
	/**
	* This file is part of the TelegramBot package.
	*
	* (c) Avtandil Kikabidze aka LONGMAN <akalongman@gmail.com>
	*
	* For the full copyright and license information, please view the LICENSE
	* file that was distributed with this source code.
	*/

	namespace Longman\TelegramBot\Entities;

	use Longman\TelegramBot\Exception\TelegramException;

	class InlineKeyboardButton extends Entity
	{
	protected $text;
	protected $url;
	protected $callback_data;
	protected $switch_inline_query;


	/**
	* InlineKeyboardButton constructor.
	*
	* @todo check if only one of 'url, callback_data, switch_inline_query' fields is set, documentation states that only one of these can be used
	*
	* @param array $data
	*/
	public function __construct($data = array())
	{
	$this->text = isset($data['text']) ? $data['text'] : null;
	if (empty($this->text)) {
	throw new TelegramException('text is empty!');
	}

	$this->url = isset($data['url']) ? $data['url'] : null;
	$this->callback_data = isset($data['callback_data']) ? $data['callback_data'] : null;
	$this->switch_inline_query = isset($data['switch_inline_query']) ? $data['switch_inline_query'] : null;

	if ($this->url === '' && $this->callback_data === '' && $this->switch_inline_query === '') {
	throw new TelegramException('You must use at least one of these fields: url, callback_data, switch_inline_query!');
	}
	}
	}