output just images from acf photo gallery field, with 'cell' class on images

code-block.php

<?php

    global $post;

    //Get the images ids from the post_metadata
    $images = acf_photo_gallery('photo_gallery', $post->ID);
    //Check if return array has anything in it
    if( count($images) ):
        //Cool, we got some data so now let's loop over it
        foreach($images as $image):
            $id = $image['id']; // The attachment id of the media
            $title = $image['title']; //The title
            $caption= $image['caption']; //The caption
            $full_image_url= $image['full_image_url']; //Full size image url
            $full_image_url = acf_photo_gallery_resize_image($full_image_url, 262, 160); //Resized size to 262px width by 160px height image url
            $thumbnail_image_url= $image['thumbnail_image_url']; //Get the thumbnail size image url 150px by 150px
            $url= $image['url']; //Goto any link when clicked
            $target= $image['target']; //Open normal or new tab
            //$alt = get_field('photo_gallery_alt', $id); //Get the alt which is a extra field (See below how to add extra fields)
            //$class = get_field('photo_gallery_class', $id); //Get the class which is a extra field (See below how to add extra fields)
?>
        <?php if( !empty($url) ){ ?><a href="<?php echo $url; ?>" <?php echo ($target == 'true' )? 'target="_blank"': ''; ?>><?php } ?>
            <img class="cell" src="<?php echo $full_image_url; ?>" alt="<?php echo $title; ?>" title="<?php echo $title; ?>">
        <?php if( !empty($url) ){ ?></a><?php } ?>
   
<?php endforeach; endif; ?>