Disable Admin Notices WordPress

/**

 * Disable Admin Notices WordPress

 * Description: Completely removes all admin notices from the WordPress dashboard,

 * including core WordPress notices and those added by plugins and themes.

 * @author Faisal Ahammad <me@faisalahammad.com>

 */

/**

 * Remove all notice actions

 */

function disable_all_admin_notices() {

    remove_all_actions('admin_notices');

    remove_all_actions('all_admin_notices');

    remove_all_actions('user_admin_notices');

    remove_all_actions('network_admin_notices');

}

add_action('admin_init', 'disable_all_admin_notices', 1);

/**

 * Add CSS to hide notice elements

 */

function hide_admin_notices_css() {

    ?>

    <style>

        .notice, 

        .notice-error, 

        .notice-warning, 

        .notice-success, 

        .notice-info, 

        .updated, 

        .error, 

        .update-nag {

            display: none !important;

        }

    </style>

    <?php

}

add_action('admin_head', 'hide_admin_notices_css', 1);

/**

 * Disable notice output

 */

function return_false() {

    return false;

}

add_action('admin_notices', 'return_false', 1);

add_action('all_admin_notices', 'return_false', 1);

add_action('user_admin_notices', 'return_false', 1);

add_action('network_admin_notices', 'return_false', 1);

/**

 * Remove update nags

 */

function remove_core_update_notices() {

    remove_action('admin_notices', 'update_nag', 3);

    remove_action('admin_notices', 'maintenance_nag', 10);

}

add_action('admin_init', 'remove_core_update_notices', 1);