if (preg_match('/(^Вики\s)(.*?$)/s', $text, $matches)) {
    $request = file_get_contents('https://ru.wikipedia.org/w/api.php?action=opensearch&search={$matches[2]}&limit=1&format=json');
    $response= json_decode($request, true);

    $quoteText = $response;
    Request::sendMessage([
        'chat_id' => $chat_id,
        'reply_to_message_id' => $message->getMessageId(),
        'text' => var_export($quote, true),
    ]);

    exit();
}