Hi @inhouse
Well it’s not technically an ACF question (more of PHP) but we’ll be glad to help you none the less!
If I understand you correctly this should do it:
<?php if( have_rows('portfolio_category') ): ?>
<ul class="no-bullet-list photo-gallery-category-list">
<?php $i = 1; ?>
<?php while( have_rows('portfolio_category') ): the_row(); ?>
<li class="portfolio-gallery-category">
<h3><?php echo get_sub_field('portfolio_category_title'); ?></h3>
<?php $portfolio_images = get_sub_field('portfolio_gallery');
if( $portfolio_images ): ?>
<ul class="photo-gallery">
<?php foreach( $portfolio_images as $image ): ?>
<li class="photo">
<a class="fancybox-thumb" rel="fancybox-thumb-<?php echo $i; ?>" href="<?php echo $image['url'] ?>" title="<?php echo $image['caption']; ?>">
<img src="<?php echo $image['sizes']['thumbnail']; ?>" alt="<?php echo $image['alt']; ?>"/>
</a>
</li><!--photo-->
<?php endforeach; ?>
</ul><!--photo-gallery-->
<?php wp_reset_postdata();
endif; ?>
</li><!--portfolio-gallery-category-->
<div class="clr"></div>
<?php $i++; endwhile; ?>
</ul><!--gallery-->
<?php endif; ?>
I have a feeling you overcomplicated it in your head.
