Disabling Comments In WordPress

So sometimes, you use WordPress for sites other than blogs. Sometimes, you don’t want to hear back from people on the internet, cause let’s face it, sometimes people on the internet suck. So if you want to make sure they don’t comment on your site, don’t try and delete the wp_comments table from the WordPress database like this guy thought he could do. That’s just going to cause problems. Instead, try this code.

// Disable support for comments and trackbacks in post types
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');
        }
    }
}
add_action('admin_init', 'df_disable_comments_post_types_support');

// Close comments on the front-end
function df_disable_comments_status() {
    return false;
}
add_filter('comments_open', 'df_disable_comments_status', 20, 2);
add_filter('pings_open', 'df_disable_comments_status', 20, 2);

// Hide existing comments
function df_disable_comments_hide_existing_comments($comments) {
    $comments = array();
    return $comments;
}
add_filter('comments_array', 'df_disable_comments_hide_existing_comments', 10, 2);

// Remove comments page in menu
function df_disable_comments_admin_menu() {
    remove_menu_page('edit-comments.php');
}
add_action('admin_menu', 'df_disable_comments_admin_menu');

// Redirect any user trying to access comments page
    function df_disable_comments_admin_menu_redirect() {
    global $pagenow;
    if ($pagenow === 'edit-comments.php') {
        wp_redirect(admin_url()); exit;
    }
}
add_action('admin_init', 'df_disable_comments_admin_menu_redirect');

// Remove comments metabox from dashboard
function df_disable_comments_dashboard() {
    remove_meta_box('dashboard_recent_comments', 'dashboard', 'normal');
}
add_action('admin_init', 'df_disable_comments_dashboard');

// Remove comments links from admin bar
function df_disable_comments_admin_bar() {
    if (is_admin_bar_showing()) {
        remove_action('admin_bar_menu', 'wp_admin_bar_comments_menu', 60);
    }
}
add_action('init', 'df_disable_comments_admin_bar');

Just take the code snippets you want from this, and drop them into the theme’s functions.php file to disable it how you like.