Problem with buttons

[sergey89d]

Required Information

• Operating system: ubuntu 17.10
• PHP version: php7.1-fpm
• PHP Telegram Bot version: 0.52
• Using MySQL database: yes
• MySQL version: 5.7
• Update Method: Webhook
• Self-signed certificate: yes

What are the options for solving the problem?

My currency can be added or removed and I do not know number of currencies

Error

[2018-02-16 20:22:22] bot_log.ERROR: Telegram\Bot\Exception\TelegramException: You must add some text to the button! in /var/www/site/src/Entities/KeyboardButton.php:59

This is code not working

 $data[ 'reply_markup' ] =  (new Keyboard(Currency::getArrayCurrency('output'))) // not working
                        ->setResizeKeyboard(true)
                        ->setOneTimeKeyboard(true)
                        ->setSelective(true);

OR

$output = Currency::getArrayCurrency('output');
$data[ 'reply_markup' ] =  (new Keyboard($output)) // not working
                        ->setResizeKeyboard(true)
                        ->setOneTimeKeyboard(true)
                        ->setSelective(true);

Using class

Class Currency {
    public static function getArrayCurrency(string $key): array
    {
        $currency = self::includeCurrency();

        $indexArray= [];
        $keyboardButtons = [];

        $i = 0;
        $j = 0;

        foreach ($currency[ $key ] as $k => $value) {

            $indexArray[] = $value;

        }

        $countEllements = count($indexArray);

        foreach ($indexArray as $index => $v) {

            if ($countEllements <= $j) {
                continue;
            }

            $keyboardButtons[ $i ][ 0 ] = ['text' => $indexArray[ $j++ ]];

            if ($countEllements <= $j) {
                continue;
            }
            $keyboardButtons[ $i ][ 1 ] = ['text' => $indexArray[ $j++ ]];

            $i++;
        }
        return $keyboardButtons;
    }

    protected static function includeCurrency(): array
    {
        if (file_exists(self::$curencyFile)) {
            $currency = include self::$curencyFile;
        } else {
            throw new FileNotFoundException("Currency file not found!");
        }

        return $currency;
    }
}

Currency Array

<?php
return [
    'output' => [
        'wmz' => "WMZ",
        'wmr' => "WMR",
        'qiwi' => "QIWI RUB",
        'yandex' => "YANDEX",
        'uzcard' => "UZCARD UZS",
    ],
    'entry' => [
        'wmz' => "WMZ",
        'wmr' => "WMR",
        'qiwi' => "QIWI RUB",
        'yandex' => "YANDEX",
        'uzcard' => "UZCARD UZS",
        'paynet' => "PAYNET"
    ]
];

Telegram Log

[2018-02-16 21:36:55] bot_log.DEBUG: OUTPUT: array (
0 =>
array (
0 =>
array (
'text' => 'WMZ',
),
1 =>
array (
'text' => 'WMR',
),
),
1 =>
array (
0 =>
array (
'text' => 'QIWI RUB',
),
1 =>
array (
'text' => 'YANDEX',
),
),
2 =>
array (
0 =>
array (
'text' => 'UZCARD UZS',
),
),
)

If you register a static array it works.
For example

 $data[ 'reply_markup' ] =  (new Keyboard(['A', 'B', 'C'])) //working
                        ->setResizeKeyboard(true)
                        ->setOneTimeKeyboard(true)
                        ->setSelective(true);