从附件ID获取帖子ID(重定向至产品页面)

我正在尝试将我的附件id页重定向到正确的帖子id页（woocommerce单页）。

我得到了这个URL，附件id=17381。如何检索使用此附件ID的产品/帖子ID？我已经搜索了几个小时，尝试了不同的方法，但我找不到解决方案。

https://www.ejstruplys.dk/no/?attachment_id=17381

我希望将其重定向到此页面：https://www.ejstruplys.dk/no/produkt/block-candles-rustic-surface-3/

正在执行var_dump($post) 给了我这个，但我不知道这个附件\\u id->产品id位于哪里：

OBJECT = WP_Post::__set_state(array(
  \'ID\' => 17381,
  \'post_author\' => \'1\',
  \'post_date\' => \'2015-08-24 19:32:00\',
  \'post_date_gmt\' => \'2015-08-24 19:32:00\',
  \'post_content\' => \'\',
  \'post_title\' => \'Orange. Bloklys. Rustikk overflate\',
  \'post_excerpt\' => \'\',
  \'post_status\' => \'inherit\',
  \'comment_status\' => \'open\',
  \'ping_status\' => \'closed\',
  \'post_password\' => \'\',
  \'post_name\' => \'bloklys_rustik_overflade_55_dia_orange-jpg-2\',
  \'to_ping\' => \'\',
  \'pinged\' => \'\',
  \'post_modified\' => \'2015-08-24 19:32:00\',
  \'post_modified_gmt\' => \'2015-08-24 19:32:00\',
  \'post_content_filtered\' => \'\',
  \'post_parent\' => 0,
  \'guid\' => \'https://www.ejstruplys.dk/wp-content/uploads/2015/08/bloklys_rustik_overflade_55_dia_orange.jpg\',
  \'menu_order\' => 0,
  \'post_type\' => \'attachment\',
  \'post_mime_type\' => \'image/jpeg\',
  \'comment_count\' => \'0\',
  \'filter\' => \'raw\',
  \'post_title_ml\' => \'[:en]Orange. Block candles. Rustic surface[:no]Orange. Bloklys. Rustikk overflate[:sv]Orange. Blokljus. Rustik yta[:de]Orange. Stumpenkerzen. Rustikale Oberfläche[:da]Orange. Bloklys. Rustik overflade[:]\',
));

如何从附件ID中检索帖子ID？

Edit:我试过这个：Get post id by attachment id?

但它只是回来了null.

/* * Redirect Attachment Pages */ add_action( \'template_redirect\', \'wpse27119_template_redirect\' ); function wpse27119_template_redirect() { global $post; /* Assign the specific post ID to local variable */ $post_id = get_the_ID(); /* If page has no attachment - no need to continue */ if (!is_attachment() ) return false; if (empty($post)) $post = get_queried_object(); /* Instantiating the product object based on currenct post ID */ $_product = new WC_Product_Variation($post_id); /* Check if specific post got an post_parent ~ proper image-attachments and product_variation */ if ($post->post_parent) { /* Retrieve the permalink ~ from the current product-object */ $link = get_permalink($_product->post->ID); /* Redirect the user */ wp_redirect( $link, \'301\' ); exit(); } else { /* Retrieve all product-pages */ $args = array( \'post_type\' => \'product\', \'posts_per_page\' => -1 ); /* Initialize WP_Query, and retrieve all product-pages */ $loop = new WP_Query($args); /* Check if array contains any posts */ if ($loop->have_posts()): while ($loop->have_posts()): $loop->the_post(); global $product; /* Iterate through all children in product */ foreach ($product->get_children() as $child_id) { /* Retrieve all children of the specific product */ $variation = $product->get_child($child_id); /* Check if variation is an instance of product */ if ($variation instanceof WC_Product_Variation) { /* Retrieve all image_ids from variation */ $variation_image_id = $variation->get_image_id(); /* Compare variation image id with the current post id ~ attachment id */ if ($variation_image_id == $post_id) { /* Retrieve the correct product - using the post id */ $_product = new WC_Product_Variation($post_id); /* Retrieve the permalink ~ from the current product-object */ $link = get_permalink($_product->post->ID); /* Redirect the user */ wp_redirect($link, \'301\'); exit(); } } } endwhile; endif; wp_reset_postdata(); } }

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