WordPress的如果沒有元字段，然後這樣做 - 如何？

Question

我在Wordpress中顯示元值的代碼如下，但如果它沒有填寫，我不想顯示該值。如何設置我的if/else在此？

<?php $my_meta = get_post_meta($post->ID,'_my_meta',TRUE); ?> 
         <div class="archive_images_one"><a href="<? echo $my_meta['image_one']; ?>" title="<? echo $my_meta['image_one_lightbox_title']; ?>" rel="lightbox"><img border="0" width="300px" height="200px" src="<? echo $my_meta['image_one']; ?>" alt="Android and iPhone App Development"></a></div> 
         <div class="archive_images_bottom"> 
          <div class="archive_images_bottom_one"><a href="<? echo $my_meta['image_two']; ?>" title="<? echo $my_meta['image_two_lightbox_title']; ?>" rel="lightbox" ><img border="0" width="100px" height="100px" src="<? echo $my_meta['image_two']; ?>" alt="Android and iPhone App Development"></a></div> 
          <div class="archive_images_bottom_two"><a href="<? echo $my_meta['image_three']; ?>" title="<? echo $my_meta['image_three_lightbox_title']; ?>" rel="lightbox"><img border="0" width="100px" height="100px" src="<? echo $my_meta['image_three']; ?>" alt="Android and iPhone App Development"></a></div> 
          <div class="archive_images_bottom_three"><a href="<? echo $my_meta['image_four']; ?>" title="<? echo $my_meta['image_four_lightbox_title']; ?>" rel="lightbox"><img border="0" width="100px" height="100px" src="<? echo $my_meta['image_four']; ?>" alt="Android and iPhone App Development"></a></div> 
         </div><!-- #archive_images_bottom --> 

Answer 1

<?php if (!empty($my_meta) && !empty($my_meta['image_one'])): ?> 
    <div class="archive_images_one"><a href="<? echo $my_meta['image_one']; ?>" title="<? echo $my_meta['image_one_lightbox_title']; ?>" rel="lightbox"><img border="0" width="300px" height="200px" src="<? echo $my_meta['image_one']; ?>" alt="Android and iPhone App Development"></a></div> 
<?php endif; ?> 

做其他4