Example webpage here
As you can see, there are 7 empty image fields left. How do I exclude empty fields in the code below
Code:
Expand|Select|Wrap|Line Numbers
- <a href="<?php echo $listing_photo1; ?>" rel="lightbox[roadtrip]"><img src="<?php echo $listing_photo1; ?>" width="90" height="66" /></a>
- <a href="<?php echo $listing_photo2; ?>" rel="lightbox[roadtrip]"><img src="<?php echo $listing_photo2; ?>" width="90" height="66" /></a>
- <a href="<?php echo $listing_photo3; ?>" rel="lightbox[roadtrip]"><img src="<?php echo $listing_photo3; ?>" width="90" height="66" /></a>
- <a href="<?php echo $listing_photo4; ?>" rel="lightbox[roadtrip]"><img src="<?php echo $listing_photo4; ?>" width="90" height="66" /></a>
- <a href="<?php echo $listing_photo5; ?>" rel="lightbox[roadtrip]"><img src="<?php echo $listing_photo5; ?>" width="90" height="66" /></a>
- <a href="<?php echo $listing_photo6; ?>" rel="lightbox[roadtrip]"><img src="<?php echo $listing_photo6; ?>" width="90" height="66" /></a>
- <a href="<?php echo $listing_photo7; ?>" rel="lightbox[roadtrip]"><img src="<?php echo $listing_photo7; ?>" width="90" height="66" /></a>
- <a href="<?php echo $listing_photo8; ?>" rel="lightbox[roadtrip]"><img src="<?php echo $listing_photo8; ?>" width="90" height="66" /></a>
- <a href="<?php echo $listing_photo9; ?>" rel="lightbox[roadtrip]"><img src="<?php echo $listing_photo9; ?>" width="90" height="66" /></a>
- <a href="<?php echo $listing_photo10; ?>" rel="lightbox[roadtrip]"><img src="<?php echo $listing_photo10; ?>" width="90" height="66" /></a>
- <a href="<?php echo $listing_photo11; ?>" rel="lightbox[roadtrip]"><img src="<?php echo $listing_photo11; ?>" width="90" height="66" /></a>
- <a href="<?php echo $listing_photo12; ?>" rel="lightbox[roadtrip]"><img src="<?php echo $listing_photo12; ?>" width="90" height="66" /></a>
- <a href="<?php echo $listing_photo13; ?>" rel="lightbox[roadtrip]"><img src="<?php echo $listing_photo13; ?>" width="90" height="66" /></a>
- <a href="<?php echo $listing_photo14; ?>" rel="lightbox[roadtrip]"><img src="<?php echo $listing_photo14; ?>" width="90" height="66" /></a>
- <a href="<?php echo $listing_photo15; ?>" rel="lightbox[roadtrip]"><img src="<?php echo $listing_photo15; ?>" width="90" height="66" /></a>