php codes

    <div class="container">   <div class="row">     <h1>Bootstrap 3 lightbox hidden gallery using modal</h1>         <hr>         <div class="row">                                     <div class="col-12 col-md-4 col-sm-6">                     <a title="Image 1" href="#">                         <img class="thumbnail img-responsive" id="image-1" src="http://dummyimage.com/600x350/ccc/969696&amp;text=0xD10x810xD00xB50xD10x800xD10x8B0xD00xB9">                   ...

for each number foreach (range(1, $field_count) as $number) {}