February 11, 2011 
Definition:
function adjacent_image_link($prev = true, $size = 'thumbnail', $text = false) {}
Display next or previous image link that has the same post parent.
Retrieves the current attachment object from the $post global.
Parameters
- bool $prev: Optional. Default is true to display previous link, false for next.
- $size
- $text
Source code
function adjacent_image_link($prev = true, $size = 'thumbnail', $text = false) {
global $post;
$post = get_post($post);
$attachments = array_values(get_children( array('post_parent' => $post->post_parent, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => 'ASC', 'orderby' => 'menu_order ID') ));
foreach ( $attachments as $k => $attachment )
if ( $attachment->ID == $post->ID )
break;
$k = $prev ? $k - 1 : $k + 1;
if ( isset($attachments[$k]) )
echo wp_get_attachment_link($attachments[$k]->ID, $size, true, false, $text);
}
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