Disable Comments WodPress

functions.php

<?php 
// Disable support for comments and trackbacks in post types
add_action( 'admin_init', 'nexo_disable_comments_post_types_support' );
function nexo_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' );
        }
    }
}

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

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

    return $comments;
}

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

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

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

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