使用 Wordpress 的“不能使用 stdClass 类型的对象作为数组" [英] 'Cannot use object of type stdClass as array' using Wordpress

问题描述

我正在尝试检索 wordpress 帖子中标签的 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);

在 Wordpress 文档

通过使用这个，你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个项目的 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:

不能使用 stdClass 类型的对象作为数组

Cannot use object of type stdClass as array

谁能告诉我我在这里做错了什么?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，数组包含对象(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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