kanboard_ynh/sources/app/Template/user_notifications.php

<div class="page-header">
    <h2><?= t('Email notifications') ?></h2>
</div>

<form method="post" action="?controller=user&amp;action=notifications&amp;user_id=<?= $user['id'] ?>" autocomplete="off">

    <?= Helper\form_csrf() ?>

    <?= Helper\form_checkbox('notifications_enabled', t('Enable email notifications'), '1', $notifications['notifications_enabled'] == 1) ?><br/>

    <p><?= t('I want to receive notifications only for those projects:') ?><br/><br/></p>

    <div class="form-checkbox-group">
    <?php foreach ($projects as $project_id => $project_name): ?>
        <?= Helper\form_checkbox('projects['.$project_id.']', $project_name, '1', isset($notifications['project_'.$project_id])) ?>
    <?php endforeach ?>
    </div>
    <div class="form-actions">
        <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
        <?= t('or') ?> <a href="?controller=user&amp;action=show&amp;user_id=<?= $user['id'] ?>"><?= t('cancel') ?></a>
    </div>
</form>