基于Add columns to admin orders list in WooCommerce答案代码，我能够添加3个自定义列到管理订单列表：

• 账单电子邮件，
• 计费电话，
• 付款方式标题。

我的代码：

add_filter( 'manage_edit-shop_order_columns', 'add_custom_columns_to_admin_orders', 20);
function add_custom_columns_to_admin_orders( $columns ) {
    $new_columns = array();
    foreach ( $columns as $column_name => $column_info ) {
        $new_columns[ $column_name ] = $column_info;

        if ( 'order_total' === $column_name ) {
            $new_columns['order_email'] = __( 'Email Address', 'my-textdomain' );
            $new_columns['order_customers_phone'] = __( 'Customers Phone', 'my-textdomain' );
            $new_columns['order_payment'] = __( 'Payment Method', 'my-textdomain' );
        }
    }
    return $new_columns;
}

add_action( 'manage_shop_order_posts_custom_column', 'custom_columns_content_in_admin_orders' );
function custom_columns_content_in_admin_orders( $column ) {
    global $post, $the_order;
    if ( 'order_email' === $column ) {
        if ( $the_order->has_status( array('completed') ) ) {
            $email_address = $the_order->get_billing_email();
            echo '<span class="order_complete"> '.$email_address.' </span>';
        } else {
            echo '<span class="order_not_complete">This Order is Not Completed!</span>';
        }
    }
    
    if ( 'order_customers_phone' === $column ) {
        echo '<label for="billing_phone" class="label-billing-email">Customer Phone Number:  </label>';
        echo '<input type="text" name="billing_phone" value="' . $the_order->get_billing_phone() . '" readonly />';
    }
    
    if ( 'order_payment' === $column ) {
        echo $the_order->get_payment_method_title();
    }
}

如何将搜索字段与账单电子邮件、账单电话或付款方式标题一起使用？