PHP : toggle button

Question

I have a table where each row represents a single date (browsed with a foreach)

If the user is registered for a date, the "unsubscribe" button should appear and vice versa (another foreach).

My current code shows both buttons (user is registered on both dates)

<?php if (empty($inscriptions)) :?>
                    <button class="btn-inscription" data-id-date="<?php echo $row->date_ID?>">S'inscrire</button>
                     <?php else:
                        foreach ($inscriptions as $other) :
                             if ($row->date_ID == $other->ID) : ?>
                               <button class="btn-unregister" data-id-date="<?php echo $row->date_ID?>">Se désinscrire</button>
                        <?php else:?>
                               <button class="btn-inscription" data-id-date="<?php echo $row->date_ID?>">S'inscrire</button>
                        <?php endif; endforeach; ?>
            <?php endif; ?>