php 从URL获取附件ID

Posted 2021-05-05

// retrieves the attachment ID from the file URL
function ll_get_image_id($image_url) {
  global $wpdb;

  // If testing locally
  $image_url = str_replace('//localhost:3000', site_url(), $image_url);

  $attachment = $wpdb->get_col($wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE guid='%s';", $image_url ));
  return $attachment[0];
}