Completely disable built-in posts in wordpress

disable_posts_on_wordpress.php

<?php
/***
 *                                       _           _____
 *                                      | |         |  ___|
 *      __ _  __ _  ___ _ __   ___ ___  | |__   ___ |___ \
 *     / _` |/ _` |/ _ \ '_ \ / __/ _ \ | '_ \ / _ \    \ \
 *    | (_| | (_| |  __/ | | | (_|  __/ | | | | (_) /\__/ /
 *     \__,_|\__, |\___|_| |_|\___\___| |_| |_|\___/\____/
 *            __/ |
 *           |___/
 *
 *           >> https://agenceho5.com
 */



/**
 * /====================================\
 * |                                    |
 * |   /!\   IMPORTANT WARNING    /!\   |
 * |                                    |
 * \====================================/
 *
 * WARNING IF YOU USE THIS THIS GIST !!
 * this gist modify the wordpress default behavior of the get_posts function !
 * 
 *  - by default, get_posts define `suppress_filters` parameter to true. In this code, I turn it to false.
 *  - `suppress_filters` parameter only affect `posts_*` filters
 *  - So, if you use `posts_*` filters anywhere on you website, please check if that gist not impact query results of your get_posts calls
 */



/**
  * Basic instruction for disabling wordpress built-in post type but not hide all posts on front
  */
add_action( 'init', function () {
  global $wp_post_types;

  $wp_post_types['post']->public              = false;
  $wp_post_types['post']->exclude_from_search = true;
  $wp_post_types['post']->publicly_queryable  = false;
  $wp_post_types['post']->show_ui             = false;
  $wp_post_types['post']->show_in_menu        = false;
  $wp_post_types['post']->show_in_nav_menus   = false;
  $wp_post_types['post']->show_in_admin_bar   = false;
  $wp_post_types['post']->show_in_rest        = false;
}, 0 );

/**
  * Hide all existings posts on front
  */
add_filter( 'posts_where', function ( $where ) {
  return $where . " AND wp_posts.post_type != 'post'";
}, 0 );

/**
  * If `get_posts` function is used somewhere, `post_where` filter isn't executed by default.
  */
add_action( 'pre_get_posts', function ( $query ) {
  $query->set( 'suppress_filters', false );
}, 0 );