How to Completely Disable Comments on WordPress

You can completely disable comments on your WordPress site by using the code below. It will get rid of comments on both the front end and the back end, so you won't have to deal with comments on WordPress. It's great for developers and site owners who want a clean site with few distractions.

Add the below code to the functions.php file of your active theme:

/* Function to disable comments throughout the site */
function themesdna_disable_comments_admin_init() {
    /* Redirect any user trying to access comments page */
    global $pagenow;
    
    if ($pagenow === 'edit-comments.php') {
        wp_redirect(admin_url());
        exit;
    }

    /* Remove comments metabox from dashboard */
    remove_meta_box('dashboard_recent_comments', 'dashboard', 'normal');

    /* Disable support for comments and trackbacks in post types */
    foreach (get_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 to remove comments page in menu */
function themesdna_disable_comments_menu_page() {
    remove_menu_page('edit-comments.php');
}

/* Function to remove comments links from admin bar */
function themesdna_disable_comments_admin_bar() {
    if (is_admin_bar_showing()) {
        remove_action('admin_bar_menu', 'wp_admin_bar_comments_menu', 60);
    }
}

/* Hook the function to the admin_init action */
add_action('admin_init', 'themesdna_disable_comments_admin_init');

/* Hook the function to remove comments page in menu */
add_action('admin_menu', 'themesdna_disable_comments_menu_page');

/* Hook the function to the init action */
add_action('init', 'themesdna_disable_comments_admin_bar');

/* Close comments on the front-end */
add_filter('comments_open', '__return_false', 20, 2);
add_filter('pings_open', '__return_false', 20, 2);

/* Hide existing comments */
add_filter('comments_array', '__return_empty_array', 10, 2);