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<div id="homelsider">
    <?php 
$images = get_field('header');
$i = 0;
$len = count($i);
if( $images ): ?>
        <div id="headerslider" class="carousel slide" data-ride="carousel">
            <div class="carousel-inner">
                <?php while ( have_rows('header') ) : the_row(); ?>
                    <div class="item <?php if($i == 0) { echo" active "; } ?>"> 
                        <?php if(get_sub_field('link_naar_pagina')) { ?>
                        <a href="<?php the_sub_field('link_naar_pagina'); ?>"><?php } ?>
                        <img class="sliderimg" src="<?php the_sub_field('afbeelding'); ?>">
                        <?php if(get_sub_field('link_naar_pagina')) { ?></a><?php } ?>
                       
                    </div>
            <?php $i++; endwhile; ?>
            </div>
                        <?php if($images[1]){ ?>
                <a class="left carousel-control" href="#headerslider" data-slide="prev"> <span class="glyphicon glyphicon-chevron-left"></span> <span class="sr-only">Previous</span> </a>
                <a class="right carousel-control" href="#headerslider" data-slide="next"> <span class="glyphicon glyphicon-chevron-right"></span> <span class="sr-only">Next</span> </a>
                <div class="sliderdots">
             <ol class="carousel-indicators">
			<?php
            $d = 0;
            $len = count($d); 
            foreach( $images as $image ): ?>
                <li data-target="#headerslider" data-slide-to="<?php echo $d; ?>" class="<?php if($d == 0) { echo"active"; } ?>"></li>
				<?php $d++; endforeach; ?>
             </ol>
		</div>  
        
        <?php } ?>
        </div>
        <?php endif;  ?>
</div>