how wordpress a post add comment only for logged users?

прост зайди в консоли в “настройки” сайта,”обсуждения” там есть галочка, установи галочку где нужно и всё! Зачем усложнять себе работу

thank you @liderv but i need for 1 post, not all posts!
i cant talk in russian, can type in english lang?

да. у меня атоматом переводится

авто перевод

если вы хотите только один пост,тогда я бы вам посоветовал его сделать на отдельную страницу и всё. а на общей странице постов под этим сделать внутреннюю ссылку на эту страницу. понятно?

This solution does not answer me
In any case, I need to do this for one or some of my website posts, not all of them
In Setting only for all

в описании техподдержки написано что эта функция поддерживается не всеми темами 50/50. как повезет!

тогда вам нужно привязать id нужного поста. найдите номер id class вашего поста и укажите что его нужно комментировать или не нужно

I also know that it is not supported by default.
I want to do through wordpress hacking and functions.
Thank you so much for helping and loving you.
But please read my question carefully. And do not answer if you do not know the answer!
You tell everything that I knew for myself.
Sorry for saying that.
Thank you very much again.

Nothing is impossible.
With programming everything is possible.

тогда вам надо на другом форуме спрашивать , не здесь….

This sub-forum is perfectly fine for this topic.

You need some way for code to distinguish which posts require special logic offered by your logged in code. All other posts would have the site settings apply. A couple of several possibilities:

1) enumerate all applicable post IDs in an array and check if the current post ID is in the array.

2) designate a custom field for this purpose. Check if the current post has such a field and that it has an appropriate value.

On your theme’s post comments template, there is typically a call for comment_form() or similar function to output the form. Wrap the call with something like

<?php
// Post IDs that require logging in to comment
$ids = array(123,456,789,);
if ( in_array( get_the_ID(), $ids )) {
  // special logic applies
  if ( is_user_logged_in()) {
    comment_form();
  } else {
    // not logged in - output message and login link here
  }
} else {
  // site defaults apply
  comment_form();
}

That will manage the comment form appearance on post pages. It’s possible for users to submit form data without the form because WP nonce security is lax. If it’s important to prevent this sort of hack, you need to re-check the applicability and logged in status again when the comment is submitted. For this, use the ‘pre_comment_approved’ filter and apply similar logic, except instead of calling comment_form(), return the appropriate value. Return the passed status unchanged for site defaults or user is logged in. If the post ID passed in the comment data array is in the ID array and user is not logged in, instantiate a new WP_Error object and return that.

With programming everything is possible.

Not quite true. You cannot do something that PHP or the server does not allow. For example, upload a 100gig file. Of course you could reconfigure the server to allow huge uploads. You can’t do something physically impossible though. Duh!

In the case of WP specifically, there are a few things that cannot be done cleanly through themes and plugins, where core code must be hacked. While doing so is still possible, no one should be doing so.

But as a general statement, I agree ??