在wordpress中使用wp_get_attachment_image()的正确方法
我正在寻找使用 wp_get_attachment_image() 的正确方法。
以下代码：
<?php
$args = array(
'type' => 'attachment',
'category_name' => 'portfolio'
);
$attachments = get_posts($args);
print_r($attachments);
?>
生成以下结果：
Array
(
[0] => stdClass Object
(
[ID] => 54
[post_author] => 1
[post_date] => 2010-06-22 00:32:46
[post_date_gmt] => 2010-06-22 00:32:46
[post_content] => <a href="http://localhost/wordpress/wp-content/uploads/2010/06/Capture.jpg"><img class="alignnone size-medium wp-image-55" title="Capture" src="http://localhost/wordpress/wp-content/uploads/2010/06/Capture-300x114.jpg" alt="" width="300" height="114" /></a>
[post_title] => Our Own Site
[post_excerpt] =>
[post_status] => publish
[comment_status] => open
[ping_status] => open
[post_password] =>
[post_name] => our-own-site
[to_ping] =>
[pinged] =>
[post_modified] => 2010-06-22 00:40:22
[post_modified_gmt] => 2010-06-22 00:40:22
[post_content_filtered] =>
[post_parent] => 0
[guid] => http://localhost/wordpress/?p=54
[menu_order] => 0
[post_type] => post
[post_mime_type] =>
[comment_count] => 0
[filter] => raw
)
)
但是，以下代码不会返回任何内容。
<?php
echo wp_get_attachment_image(54, array('300', '300'));
?>
我在这里做错了什么？
I'm looking for the correct way of using wp_get_attachment_image().
The following code:
<?php
$args = array(
'type' => 'attachment',
'category_name' => 'portfolio'
);
$attachments = get_posts($args);
print_r($attachments);
?>
Generates the following result:
Array
(
[0] => stdClass Object
(
[ID] => 54
[post_author] => 1
[post_date] => 2010-06-22 00:32:46
[post_date_gmt] => 2010-06-22 00:32:46
[post_content] => <a href="http://localhost/wordpress/wp-content/uploads/2010/06/Capture.jpg"><img class="alignnone size-medium wp-image-55" title="Capture" src="http://localhost/wordpress/wp-content/uploads/2010/06/Capture-300x114.jpg" alt="" width="300" height="114" /></a>
[post_title] => Our Own Site
[post_excerpt] =>
[post_status] => publish
[comment_status] => open
[ping_status] => open
[post_password] =>
[post_name] => our-own-site
[to_ping] =>
[pinged] =>
[post_modified] => 2010-06-22 00:40:22
[post_modified_gmt] => 2010-06-22 00:40:22
[post_content_filtered] =>
[post_parent] => 0
[guid] => http://localhost/wordpress/?p=54
[menu_order] => 0
[post_type] => post
[post_mime_type] =>
[comment_count] => 0
[filter] => raw
)
)
The following, however, doesn't return anything.
<?php
echo wp_get_attachment_image(54, array('300', '300'));
?>
What am I doing wrong here?
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评论（3）
事实上，我认为接受的答案并没有真正回答问题。
您的问题是您传入了帖子ID（示例中的
54；在WP用语中通常为$post->ID）到wp_get_attachment_image()。正如 codex 中所示，您应该使用 附件 id（请参阅下面的$attachment_id）：换句话说，您必须执行以下操作：
Actually, I don't think the accepted answer really answers the question.
Your problem is that you're passing in the post id (
54in your example; typically$post->IDin WP parlance) towp_get_attachment_image(). As can be seen in the codex, you're supposed to use the attachment id (see$attachment_idbelow):In other words, you've got to do something like this:
wp_get_attachment_image 函数可以接受四个值，如您所见：
所以我总是使用：
注意：我们可以简单地使用 get_the_ID() 来传递活动帖子的 id。这里700是宽度，600是附件图像的高度。我们还可以将我们的类作为 array( "class" => "img-responsive" ) 传递
wp_get_attachment_image function can accept four values as you can see:
So i always use:
Note: we can simply use get_the_ID() to pass id of active post. and here 700 is width and 600 is height of attachment image. we can also pass our class as array( "class" => "img-responsive" )
函数
wp_get_attachment_image仅获取上传到wordpress的图像，它不会输出帖子内容中的图像。您必须输出示例图像的帖子内容。
例如：
echo $attachments['post_content'];The function
wp_get_attachment_imageonly gets an image that was uploaded to wordpress, it doesn't output an image in the content of the post.You have to output the content of the post for your example image.
Like:
echo $attachments['post_content'];