动态POST php变量

Question

尝试根据文件夹中的图像数量发布一定数量的变量。当n是当前循环中的数字时，变量基于输入名称为“Pano__000nheading”的字段中的数字。我相信我的代码在页面上正常工作，如果你看到任何缺陷是我的代码，那么获取值只需要帮助：

$url = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
 $id = substr( $url, strrpos( $url, '&' )+1 );
    $dirname = "../wp-content/themes/Explorable/".$id."/"; 
  $images = glob($dirname."*.jpg");
// Open a known directory, and proceed to read its contents  
foreach($images as $image) {
 $imageNameLong = substr($image, -14);
$imageName = substr($imageNameLong,0 , -4);

 if ( isset( $_POST[$imageName.'links'] ) )
            update_post_meta( $post_id, '_'.$imageName.'links', sanitize_text_field( $_POST[$imageName.'links'] ) );
        else
            delete_post_meta( $post_id, '_'.$imageName.'links' ); 

    if ( isset( $_POST[$imageName.'heading'] ) )
            update_post_meta( $post_id, '_'.$imageName.'heading', sanitize_text_field( $_POST[$imageName.'heading'] ) );
        else
            delete_post_meta( $post_id, '_'.$imageName.'heading' ); 
};