How to automatically assign additional field to all WordPress posts?

Question

PHP

Good!
How to automatically assign additional a field to all WordPress posts that will contain its ID?
Thanks in advance!

Answer 1

why not just display the post id?

Answer 2

If it’s clear on the question, then make a WP_Query request where you specify in the parameters, "post_status"=>"any"post_type here list everything you need (page, post, etc. custom, if any)
Then when you go through the received records in a loop :

$post_id = get_the_ID();
update_post_meta($post_id, 'custom_post_id', $post_id);

where custom_post_id will be your field with ID
But the person really says that this is not why, ID is so easy to get