#Wordpress メアドなしでユーザー登録できるようにする functions.php

備忘録です😇
WordPress 5.6.1 で動作確認。
引用元: https://wordpress.stackexchange.com/questions/22754/user-without-email
皆様の知見に感謝！

// This will suppress empty email errors when submitting the user form
add_action('user_profile_update_errors', 'my_user_profile_update_errors', 10, 3 );
function my_user_profile_update_errors($errors, $update, $user) {
    $errors->remove('empty_email');
}

// This will remove javascript required validation for email input
// It will also remove the '(required)' text in the label
// Works for new user, user profile and edit user forms
add_action('user_new_form', 'my_user_new_form', 10, 1);
add_action('show_user_profile', 'my_user_new_form', 10, 1);
add_action('edit_user_profile', 'my_user_new_form', 10, 1);
function my_user_new_form($form_type) {
    ?>
    <script type="text/javascript">
        jQuery('#email').closest('tr').removeClass('form-required').find('.description').remove();
        // Uncheck send new user email option by default
        <?php if (isset($form_type) && $form_type === 'add-new-user') : ?>
            jQuery('#send_user_notification').removeAttr('checked');
        <?php endif; ?>
    </script>
    <?php
}