'不能将 stdClass 类型的对象用作数组' 使用 Wordpress

2022-01-18 00:00:00 arrays tags php wordpress

我正在尝试在 wordpress 帖子中检索标签的 slug，现在可以使用

I am trying to retrieve the slug for a tag inside a wordpress post, now its possible to get all tag info using 

$tag = wp_get_post_tags($post->ID);

Wordpress 文档

通过使用它，您应该得到像这样返回的数据...

By using this you should get data returned like this...

Array
(
   [0] => stdClass Object
       (
           [term_id] => 4
           [name] => tag2
           [slug] => tag2
           [term_group] => 0
           [term_taxonomy_id] => 4
           [taxonomy] => post_tag
           [description] => 
           [parent] => 0
           [count] => 7
       )

   [1] => stdClass Object
       (
           [term_id] => 7
           [name] => tag5
           [slug] => tag5
           [term_group] => 0
           [term_taxonomy_id] => 7
           [taxonomy] => post_tag
           [description] => 
           [parent] => 0
           [count] => 6
       )

)

现在我想要的是第一项的 slug 应该如下

Now what I want is the slug for the first item which should be as follows

$tag[0]['slug']

但是这样做我收到了这个 php 错误:

However by doing so I recieve this php error:

不能将 stdClass 类型的对象用作数组

Cannot use object of type stdClass as array

有人可以告诉我我在这里做错了什么吗?以及获取 slug 数据的最佳方法是什么

Can someone tell me what I'm doing wrong here? and whats the best way to get the slug data

推荐答案

请注意，该数组包含 objects(stdClass 的实例)，而不是其他数组.所以语法是:

Note that the array contains objects (instances of stdClass), not other arrays. So the syntax is:

$tag[0]->slug

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