blocks|key|2904723|text|我想通了：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2904724|/************************************************************\
*+Fetch+The+Post+Thumbnail+Caption
\************************************************************/

function+the_post_thumbnail_caption()+{
++global+$post;

++$thumbnail_id++++=+get_post_thumbnail_id($post->ID);
++$thumbnail_image+=+get_posts(array('p'+=>+$thumbnail_id,+'post_type'+=>+'attachment'));

++if+($thumbnail_image+&&+isset($thumbnail_image[0]))+{
++++echo+$thumbnail_image[0]->post_excerpt;
++}
}|code-block|syntax|javascript|2904725|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I figured it out:

<pre><code>/************************************************************\
* Fetch The Post Thumbnail Caption
\************************************************************/

function the_post_thumbnail_caption() {
 global $post;

 $thumbnail_id = get_post_thumbnail_id($post-&gt;ID);
 $thumbnail_image = get_posts(array('p' =&gt; $thumbnail_id, 'post_type' =&gt; 'attachment'));

 if ($thumbnail_image &amp;&amp; isset($thumbnail_image[0])) {
 echo $thumbnail_image[0]-&gt;post_excerpt;
 }
}
</code></pre>

blocks|key|2620010|text|下面是一个更简单、更简短的代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2620011|<?php+the_post_thumbnail();
echo+get_post(get_post_thumbnail_id())->post_excerpt;+?>|code-block|syntax|javascript|2620012|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Here is an easier and shorter code : 

<pre><code>&lt;?php the_post_thumbnail();
echo get_post(get_post_thumbnail_id())-&gt;post_excerpt; ?&gt;
</code></pre>

blocks|key|2904744|text|if(!function_exists('get_post_thumbnail_caption'))+{
++++function+get_post_thumbnail_caption($post_id+=+null)+{
++++++++$post_id+=+(+null+===+$post_id+)+?+get_the_ID()+:+$post_id;
++++++++$thumbnail_id+=+get_post_thumbnail_id($post_id);
++++++++if+($thumbnail+=+get_post($thumbnail_id))
++++++++++++return+$thumbnail->post_excerpt;
++++++++return+'';
++++}
}

if(!function_exists('the_post_thumbnail_caption'))+{
++++function+the_post_thumbnail_caption($post_id+=+null)+{
++++++++echo+get_post_thumbnail_caption($post_id);
++++}
}

if(has_post_thumbnail())+{
++++the_post_thumbnail();
++++the_post_thumbnail_caption();

++++$caption+=+get_post_thumbnail_caption(123);
++++if(''+==+$caption)
++++++++echo+'<div+class="caption">'.$caption.'</div>';
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2904745|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>if(!function_exists('get_post_thumbnail_caption')) {
 function get_post_thumbnail_caption($post_id = null) {
 $post_id = ( null === $post_id ) ? get_the_ID() : $post_id;
 $thumbnail_id = get_post_thumbnail_id($post_id);
 if ($thumbnail = get_post($thumbnail_id))
 return $thumbnail-&gt;post_excerpt;
 return '';
 }
}

if(!function_exists('the_post_thumbnail_caption')) {
 function the_post_thumbnail_caption($post_id = null) {
 echo get_post_thumbnail_caption($post_id);
 }
}

if(has_post_thumbnail()) {
 the_post_thumbnail();
 the_post_thumbnail_caption();

 $caption = get_post_thumbnail_caption(123);
 if('' == $caption)
 echo '&lt;div class="caption"&gt;'.$caption.'&lt;/div&gt;';
}
</code></pre>

blocks|key|2620041|text|从Template4.6开始，函数the_post_thumbnail_caption()已经被添加到核心中(/wp-includes/post-+WordPress+-template.php)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2620042|使用此处发布的代码将导致错误：|2620043|Fatal+error:+Cannot+redeclare+the_post_thumbnail_caption()|code-block|syntax|javascript|2620044|entityMap^0|H|S|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|R|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|S|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

As of WordPress 4.6, the function <code>the_post_thumbnail_caption()</code> has been added to core (/wp-includes/post-thumbnail-template.php).

Using the code posted here will cause the error:

<pre><code>Fatal error: Cannot redeclare the_post_thumbnail_caption()
</code></pre>

Is there a way to display the image caption where ever available when displaying <code>the_post_thumbnail()</code> image in WordPress on the posts in the primary loop.

Thanks! Appreciate all the help.

Image Caption with the_post_thumbnail in WordPress

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

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当在主循环中的帖子上显示WordPress格式的the_post_thumbnail()图像时，有没有一种方法可以在可用的地方显示图像标题。谢谢!感谢所有人的帮助。

问在WordPress中使用the_post_thumbnail添加图像字幕
EN

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