如果您的图像命名为really 与产品SKU匹配并使用media uploader上载文件，您可以使用a single function 钩住add_attachment 你就完了。

一旦需要一些工作，我会避免在一个“会话”中上传所有数百张图片，也许你每次可以上传25/50张图片，而不会出现任何问题。。。

有关代码作用的更多信息，请参见注释：

add_action(\'add_attachment\', function( $attachmentID ) {
  if ( ! class_exists( \'WC_Product\' ) ) return; // if no WooCommerce do nothing

  // an attachment was jus saved, first of all get the file name
  $src = wp_get_attachment_image_src( $attachmentID, \'full\' );
  $filename = pathinfo( $src[0], PATHINFO_FILENAME );

  // now let\'s see if exits a product with the sku that match filename
  $args = array(
    \'meta_key\' => \'_sku\',
    \'meta_value\' => $filename,
    \'post_type\' => \'product\',
    \'posts_per_page\' => \'1\' // assuming sku is unique get only one post
  );
  $prods = get_posts( $args );
  if ( ! empty($prods) ) {

    // ok we have a match, exists a product having sku that match filename
    $product = array_pop( $prods );

    // set the thumbnail for the product
    set_post_thumbnail( $product, $attachmentID );

    // now "attach" the post to the product setting \'post_parent\'
    $attachment = get_post( $attachmentID );
    $attachment->post_parent = $product->ID;
    wp_update_post( $attachment );
  }
});