Foreach for gallery of custom field set

gallery

<?php $images = get_field('galeria'); if( $images ): ?>
	<?php $i = 0; ?>
	<?php foreach( $images as $image ): ?>
	<?php if($i < 1) { ?>
	<a href="<?php echo $image['url']; ?>">
         <img src="<?php echo $image['sizes']['medium']; ?>" alt="<?php echo $image['alt']; ?>">
    </a>
    <?php $i++; } else {  ?>
    <a href="<?php echo $image['url']; ?>">
         <img src="<?php echo $image['sizes']['thumbnail']; ?>" alt="<?php echo $image['alt']; ?>">
    </a>
    <?php } ?>
	<?php endforeach; ?>
<?php endif; ?>