Ik heb deze Php code in Wordpress:

PHP Code:

<?php
                 
                $attachment_id = get_field('thumbnail_1');
                $full_size = "full";
                $thumb_size = "100x100"; // (thumbnail, medium, large, full or custom size)
                 
                $image_thumb = wp_get_attachment_image_src( $attachment_id, $thumb_size );
                $image_full = wp_get_attachment_image_src( $attachment_id, $full_size );
                // url = $image[0];
                // width = $image[1];
                // height = $image[2];
                ?>
                <a href="<?php echo $image_full[0]; ?>"><img src="<?php echo $image_thumb[0]; ?>" class="activity-thumbnail" /></a>

Ik maak gebruik van een custom field genaamd, thumbnail_1.
Nu wil ik ook thumbnail_2 en thumbnail_3 als custom fields aanmaken. Hoe zorg ik in bovenstaande code dat ALS thumbnail_2 en thumbnail_3 bestaan deze ook worden weergegeven en dus linken naar de juiste image-url's?

Nu kwam ik via Google deze code tegen:

PHP Code:

<?php $images = array();
 for($x=1;$x<=25;$x++)
 {
   $img = get_field('thumbnail_' . $x);
   if($img)
   {
     $images[] = $img;
   }
   else
   {
     break;
   }
 }
 ?>
 
 <div id="rotator">
<?php foreach($images as $image) { ?>
  <img src="<?php echo $image ?>">
<?php } ?>
</div>

...maar ik snap niet hoe ik die werkend krijg i.c.m. bovenstaande code. Of is er een andere oplossing?

Ook moet hij thumbnail_1 niet weergeven als er geen afbeelding is ingevoerd.
Aanvullend bericht:
Iemand een idee?

PHP Code:

<?php
                $num = 3; // aantal plaatjes er eventueel geladen zou moeten worden
                $images = array();
                for($x=0;$x==$num;$x++){
                   $img = get_field('thumbnail_' . $x);
                   if($img){
                      $images[] = $img;
                   } else {
                      break;
                   }
                }

                if(!empty($images)){
                   foreach($images as $key => $attachment_id){
                      $full_size = "full";
                      $thumb_size = "100x100"; // (thumbnail, medium, large, full or custom size)
                 
                      $image_thumb = wp_get_attachment_image_src( $attachment_id, $thumb_size );
                      $image_full = wp_get_attachment_image_src( $attachment_id, $full_size );
                      // url = $image[0];
                      // width = $image[1];
                      // height = $image[2];
                      echo "<a href=\"".$image_full[0]."\"><img  src=\"".$image_thumb[0]."\"  class=\"activity-thumbnail\"  /></a>";
                   }
                }
?>

Bedankt voor je reactie. Helaas geeft hij geen afbeeldingen weer. Inmiddels heb ik hulp gekregen en dit werkt:

PHP Code:

<?php
                /*
                *  Get selected image cropped to a specific size
                *  Return value = ID ( allows us to get more data about the image )
                *  This example uses the WP function: wp_get_attachment_image_src - http://codex.wordpress.org/Function_Reference/wp_get_attachment_image_src
                */
                 
                $attachment_id = get_field('thumbnail_1');
                $attachment_id2 = get_field('thumbnail_2');
                $attachment_id3 = get_field('thumbnail_3');

                $full_size = "full";
                $thumb_size = "100x100"; // (thumbnail, medium, large, full or custom size)
                 
                $image_thumb = wp_get_attachment_image_src( $attachment_id, $thumb_size );
                $image_full = wp_get_attachment_image_src( $attachment_id, $full_size );

                $image_thumb2 = wp_get_attachment_image_src( $attachment_id2, $thumb_size );
                $image_full2 = wp_get_attachment_image_src( $attachment_id2, $full_size );

                $image_thumb3 = wp_get_attachment_image_src( $attachment_id3, $thumb_size );
                $image_full3 = wp_get_attachment_image_src( $attachment_id3, $full_size );
                // url = $image[0];
                // width = $image[1];
                // height = $image[2];
                ?>
                
                <div class="activity-thumbnail">
                    <?php
                    $attachment_id = get_post_custom_values("thumbnail_1");
                    $attachment_id2 = get_post_custom_values("thumbnail_2");
                    $attachment_id3 = get_post_custom_values("thumbnail_3");
                    
                    if ( is_array($attachment_id) ) {
                    echo '<a href="' . $image_full[0]. '" rel="lightbox"><img src="' . $image_thumb[0]. '" /></a>';
                    }
                    
                    if ( is_array($attachment_id2) ) {
                    echo '<a href="' . $image_full2[0]. '" rel="lightbox"><img src="' . $image_thumb2[0]. '" /></a>';
                    }
                    
                    if ( is_array($attachment_id3) ) {
                    echo '<a href="' . $image_full3[0]. '" rel="lightbox"><img src="' . $image_thumb3[0]. '" /></a>';
                    }
                    ?>
                </div>

Ik zie nu ook in je nieuwe script een functie naar voren komen die ik niet in je vorige post ben tegengekomen.
Dit zou dan wel moeten werken:

PHP Code:

<div class="activity-thumbnail">  
<?php
                $num = 3; // aantal plaatjes er eventueel geladen zou moeten worden
                $images = array();
                for($x=1;$x>$num;$x++){
                   $images[] = 'thumbnail_' . $x;
                }

                foreach($images as $key => $value){
                      $attachment_id = get_field($value);
                      $full_size = "full";
                      $thumb_size = "100x100"; // (thumbnail, medium, large, full or custom size)
                 
                      $image_thumb = wp_get_attachment_image_src( $attachment_id, $thumb_size );
                      $image_full = wp_get_attachment_image_src( $attachment_id, $full_size );
                      // url = $image[0];
                      // width = $image[1];
                      // height = $image[2];
                     $check_attachment = get_post_custom_values($value);
                     if(is_array($check_attachment))
                        echo "<a href=\"".$image_full[0]."\" rel=\"lightbox\"><img  src=\"".$image_thumb[0]."\"></a>";
                }
?>
</div>