1. Go to this page and download the library: Download zakharov-andrew/yii2-user library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?php
require_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
<?= \ZakharovAndrew\user\components\BirthdayWidget::widget([
'headerMessage' => 'Today’s birthdays:',
'noBirthdaysMessage' => 'Today, no one is celebrating a birthday.', // or empty
'useAvatars' => true
]);