Include images from content editor in batch

[stenberg]

Currently only featured images are supported.

[stenberg]

Get all attachments with current post as parent and exclude the featured image:

$attachments = get_posts(
        array(
            'post_parent'    => $post->get_id(),
            'post_type'      => 'attachment',
            'posts_per_page' => -1,
            'exclude'        => $thumbnail_id,
        )
    );

Unfortunately that does not support attachments first added to one post and then reused on another post.

[stenberg]

Get attachments added to a specific post (same as above without excluding featured image):

get_attached_media( '', $post->get_id() );

Does not support images added to one post and reused on another (same limitation as in comment above).