Wordpress Disable Comments (add to function.php)

function.php

<?php

add_action('admin_init', function () {
    // 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');
        }
    }
});

// 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);

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

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

No description provided.

Great and Thank you :)

thanks!

Don't forget to delete all existing comments ;]
TRUNCATE wp_commentmeta; TRUNCATE wp_comments;

Great !

Great!

Works like a charm, nice job.

Works a treat 👍

Beautiful, there is a function for every plugin, indeed! Thank you this one!

Great work, very useful, thanks a lot.

Thanks!

Useful, thanks.

Thanks!

Good work!
I forked it to make a WPCS complient version: https://gist.github.com/alexwoollam/2f4bcd4eb4740eb49562131290248f26

Thank you

For anyone interested in this, I cleaned it up a little bit:

<?php

add_action('admin_init', function () {
    // 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');
        }
    }
});

// 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);

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

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

Thank you @mattclements and @danielpost !

Great, thanks! This worked for me to remove the comments icon in admin bar

add_action('wp_before_admin_bar_render', function() {
    global $wp_admin_bar;
    $wp_admin_bar->remove_menu('comments');
});

Great, Thanks!!
How can I hide comments (module,row or section) if the user is logged out

Thanks, @mattclements and, @danielpost too.

Can anyone tell me why the following line is not removed or hide existing comments?

// 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);

Your code has a flaw! It does not remove existing comment count in admin bar.

function df_disable_comments_admin_menu() {
remove_menu_page('edit-comments.php');
}
add_action('init', 'df_disable_comments_admin_menu');

This code is not working and is broken. init should be admin-init.

See working code...

function df_disable_comments_admin_bar() {
if (is_admin_bar_showing()) {
remove_action('admin_bar_menu', 'wp_admin_bar_comments_menu', 60);
}
}
add_action('admin_init', 'df_disable_comments_admin_bar');

Thanks @danielpost!

I have updated the very old version that I had to yours, much cleaner and I think it covers all the other flaws that others have commented on.

1. Change setting in Settings > Discussion.
2. Disable Comments section in Admin by adding this code to functions.php

function remove_menus() {
    remove_menu_page( 'edit-comments.php' );
}
add_action( 'admin_menu', 'remove_menus' );

Thank you.

For a class that can be included then initialised with \x\Comments::initialise(); try this gist:
https://gist.github.com/EarthlingDavey/bc72015b23449a10e4476c2fe6a63fec

Still shows in the admin bar. Updating that portion to this and appears to work: https://www.isitwp.com/remove-comments-link-from-admin-bar/.

Works perfectly, thanks!

Thank you 👍

Thank you works great!

Nice one - 👍

Thanks million :D