以下内容就足够了。只有在订单没有失败的情况下，它才会重定向到您的自定义URL。

add_action( \'woocommerce_thankyou\', \'ii_redirect_thankyou\');
function ii_redirect_thankyou( $order_id ){
    $customer_orders = get_posts( array(
        \'numberposts\' => 2, // getting 2 as by the time this purchase has happened the count will be 1.
        \'meta_key\'    => \'_customer_user\',
        \'meta_value\'  => get_current_user_id(),
        \'post_type\'   => \'shop_order\', // WC orders post type
        \'post_status\' => \'wc-completed\', // Only orders with "completed" status
        \'fields\'      => \'ids\', // Return Ids "completed"
    ) );

    if ( count($customer_orders) > 1 ) {
      $order = wc_get_order( $order_id );
      $url = \'http://example.com\';

      // double check this order has gone through okay and then redirect them
      if ( ! $order->has_status( \'failed\' ) ) {
        wp_safe_redirect( $url );
        exit;
      }
    }
}

函数woocommerce\\u redirect\\u after\\u checkout（）{global$wp；if（is\\u checkout（）&；！empty（$wp->；query\\u vars[\'order-completed\'）{$redirect\\u url=\'https://example.com\'；wp\\u重定向（$redect\\u url）；退出；}}