Extra commas in my admin panel

Hello,

When I view an order and look at the accessories section, it will always have an extra comma at the end:

Charger, Box,

Instead of:

Charger, Box

This is what my code is, please let me know what I did wrong.

Thank you! 

Code:

<?php if($accepted_offer->accessories != ''): ?>
                        <div class="item">
                            <b>Accessories:</b>
                            <?php foreach (explode(',', $accepted_offer->accessories) as $accessory): ?>
                                <?= htmlspecialchars(isset($accessories[$accessory])?$accessories[$accessory]->title:'Deleted') ?>,
                            <?php endforeach ?>