Adding a Phone number to the wordPress users.

adding field

lwp_register_rest_route

add_action('edit_user_profile_update', array(&$this, 'lwp_update_phonenumber_field'));
add_action('personal_options_update', array(&$this, 'lwp_update_phonenumber_field'));
add_action('edit_user_profile', array(&$this, 'lwp_add_phonenumber_field'));
add_action('show_user_profile', array(&$this, 'lwp_add_phonenumber_field'));


    function lwp_add_phonenumber_field($user)
    {
        $phn = get_the_author_meta('phone_number', $user->ID);
        ?>
        <h3><?php esc_html_e('Personal Information', 'crf'); ?></h3>

        <table class="form-table">
            <tr>
                <th><label for="phone_number"><?php esc_html_e('phone_number', $this->textdomain); ?></label></th>
                <td>
                    <input type="text"

                           step="1"
                           id="phone_number"
                           name="phone_number"
                           value="<?php echo esc_attr($phn); ?>"
                           class="regular-text"
                    />

                </td>
            </tr>
        </table>
        <?php
    }

    function lwp_update_phonenumber_field($user_id)
    {
        if (!current_user_can('edit_user', $user_id)) {
            return false;
        }

//        if ( ! empty( $_POST['year_of_birth'] ) && intval( $_POST['year_of_birth'] ) >= 1900 ) {
        update_user_meta($user_id, 'phone_number', $_POST['phone_number']);
//        }
    }
 

managing columns on the user table

  add_filter('manage_users_columns', array(&$this, 'lwp_modify_user_table'));
        add_filter('manage_users_custom_column', array(&$this, 'lwp_modify_user_table_row'), 10, 3);
        add_filter('manage_users_sortable_columns', array(&$this, 'lwp_make_registered_column_sortable'));
        
        
           function lwp_modify_user_table($column)
    {
        $column['phone_number'] = __('Phone number', $this->textdomain);
        $column['activation_code'] = __('Activation code', $this->textdomain);
        $column['registered_date'] = __('Registered date', $this->textdomain);

        return $column;
    }
    
    
    function lwp_modify_user_table_row($val, $column_name, $user_id)
    {
        $udata = get_userdata($user_id);
        switch ($column_name) {
            case 'phone_number' :
                return get_the_author_meta('phone_number', $user_id);
            case 'activation_code' :
                return get_the_author_meta('activation_code', $user_id);
            case 'registered_date' :
                return $udata->user_registered;
            default:
        }
        return $val;
    }
    
       function lwp_make_registered_column_sortable($columns)
    {
        return wp_parse_args(array('registered_date' => 'registered'), $columns);
    }