如何在woocommerce中的产品数据选项卡中添加自定义选项卡，然后将输入保存在数据库中并显示在订单详细信息页面上

实例

我尝试了这段代码来创建自定义选项卡和输入，现在我正在寻找如何在订单详细信息页面上保存和显示输入文本。我想在新的自定义选项卡中添加文本，并在订单详情页中显示该文本

add_filter('woocommerce_product_data_tabs', 'custom_tab');
function custom_tab($tabs) {
    $tabs['ppwp_woo'] = array(
        'label' => 'Custom Link',
        'target' => 'ppwp_woo_options',
        'priority' => 65,
    );
    return $tabs;

}

add_action( 'woocommerce_product_data_panels' ,'custom_tab_content' );
function custom_tab_content() {
    global $woocommerce, $post;
    ?>
    <div id="ppwp_woo_options" class="panel woocommerce_options_panel">
        <?php
        woocommerce_wp_text_input(
            array(
                'id'          => '_custom_link',
                'label'       => __( 'link', 'woocommerce' ),
                'desc_tip'    => 'true',
                'description' => __( 'Insert any text that you want to include in the order product details.', 'woocommerce' ),
            )
        );
        ?>
    </div>
    <?php
}
add_action( 'woocommerce_process_product_meta', 'save_options' );
function save_options($product_id)
{
    $keys = array(
        '_custom_link',
    );
    foreach ($keys as $key) {
        if (isset($_POST[$key])) { 
            update_post_meta($product_id, $key, $_POST[$key]);
        }
    }
}