问题描述：

I need to add my own custom PHP script to all Wordpress pages of my blog.

I am not referring to adding PHP onto a single page (which can be done with a plugin).

Essentially, this is what I need to do:

• Add a snippet of code directly to Wordpress script that handles
  display of posts.
• The snippet needs to be able to grab a ID of the post.

Can someone show me the best way to do this?

This is what I need to figure out:

• Which of the Wordpress php files handles the display of the Wordpress

  posts (is it post-template.php by any chance?)

• How to grab the Post ID using PHP? I found the page which says this could be the possible way, is that correct way of getting the Post ID?

  $id = get_the_ID();

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功能建议

我需要将自己的自定义PHP脚本添加到我博客的所有Wordpress页面。</ p>

\\ n

我不是指将PHP添加到单个页面上（可以使用插件完成）。 </ p>

基本上，这就是我需要做的事情：</ p>

• 将一段代码直接添加到处理

  display的Wordpress脚本 帖子。</ li>

• 该片段需要能够获取帖子的ID。</ li>

  </ ul>

  有人能告诉我最佳方式 要做到这一点？</ p>

  这是我需要弄清楚的：</ p>

  • 哪些Wordpress php文件处理 Wordpress

    posts的显示（它是post-template.php吗？）</ p> </ li>

  • 如何使用PHP获取帖子ID？ 我发现这个页面说明了这可能是获取帖子ID的正确方法吗？</ p>

    $ id = get_the_ID（）; </ p> </ li> \\ n </ ul>

    </ div>

    网友观点：

    for single post, it single.php and to get post ID

    $post = get_post();
    $id = $post->ID;

    ###

    It depends on the theme. Very simple themes might use index.php for all pages, others use single.php for the display of single posts, and there are a lot more possibiites, also secondary templates (template parts) which are included in the primary templates and contain part of the post. Have a look in the theme folder.

    Inside all of these, the posts are always inside \\\"the loop\\\". This page has the explanation and some useful examples: https://codex.wordpress.org/the_loop HTH