<?php if(have_rows( 'image_gallery' ) ): ?>
      <?php while(have_rows( 'image_gallery' ) ): the_row();
        $gallery_name = get_sub_field('gallery_name');
        $category_name = get_sub_field('category_name');
        $gallery = get_sub_field('image_gallery');
        $value = get_row_index();
       ?>
     <div class="gallery" id="selector<?php echo $value; ?>">
        <img src="<?php echo $gallery[0]['url']; ?>" alt="" class="gallery-photo">
        <div class="gallery-info">
           <a href="#" class="linkgallery"><?php echo $gallery_name; ?></a>
        </div>
        <div class="gallery-info gallery-category">
            <?php echo $category_name; ?>
        </div>
     </div>
    <?php endwhile; ?>
     <?php endif; ?>

$('#selector').on('click', function() {

$(this).lightGallery({
    dynamic: true,
    dynamicEl: [{
        "src": '../static/img/1.jpg',
        'thumb': '../static/img/thumb-1.jpg',
        'subHtml': '<h4>Fading Light</h4><p>Classic view from Rigwood Jetty on Coniston Water an old archive shot similar to an old post but a little later on.</p>'
    }, {
        'src': '../static/img/2.jpg',
        'thumb': '../static/img/thumb-2.jpg',
        'subHtml': "<h4>Bowness Bay</h4><p>A beautiful Sunrise this morning taken En-route to Keswick not one as planned but I'm extremely happy I was passing the right place at the right time....</p>"
    }, {
        'src': '../static/img/3.jpg',
        'thumb': '../static/img/thumb-3.jpg',
        'subHtml': "<h4>Coniston Calmness</h4><p>Beautiful morning</p>"
    }]
})

});

var arrayFromPhp = <?php echo json_encode($gallery); ?>;
var myArr = [];
jQuery.each(arrayFromPhp, function(index, item) {
      myArr.push({"src": item.url, 'thumb': item.url});
      console.log(item.ID);
});

$(this).lightGallery({
    dynamic: true,
    dynamicEl: myArr
})