Disable WordPress comments

wp_comments.php

<?php


/***********************************
 * 
 * ! DISABLE COMMENTS
 * 
 * *********************************/
function df_disable_comments_post_types_support()
{
    $post_types = get_post_types();
    foreach ($post_types as $post_type) {
        if (post_type_supports($post_type, 'comments')) {
            remove_post_type_support($post_type, 'comments');
            remove_post_type_support($post_type, 'trackbacks');
        }
    }
}
function df_disable_comments_status()
{
    return false;
}
function df_disable_comments_hide_existing_comments($comments)
{
    $comments = array();
    return $comments;
}
add_action('admin_init', 'df_disable_comments_post_types_support');
add_filter('comments_open', 'df_disable_comments_status', 20, 2);
add_filter('pings_open', 'df_disable_comments_status', 20, 2);
add_filter('comments_array', 'df_disable_comments_hide_existing_comments', 10, 2);