Lot of subject talk about it but seem to be outdated.

I use the new version of Wordpress (5.2.2), and no plugin or code snippet working.

Someone already has this problem ?

I already use plugin the Auto Post Thumbnail, and it's not working. Do you know a plugin for that ?

Lot of subject talk about it but seem to be outdated.

I use the new version of Wordpress (5.2.2), and no plugin or code snippet working.

Someone already has this problem ?

I already use plugin the Auto Post Thumbnail, and it's not working. Do you know a plugin for that ?

• post-thumbnails

1 Answer 1

Please try the code given below:

    function auto_featured_image() {
    global $post;

    if (!has_post_thumbnail($post->ID)) {
        $attached_image = get_children( "post_parent=$post->ID&post_type=attachment&post_mime_type=image&numberposts=1" );

    if ($attached_image) {
            foreach ($attached_image as $attachment_id => $attachment) {
                set_post_thumbnail($post->ID, $attachment_id);
            }
        }
    }
}
// Use it temporary to generate all featured images
add_action('the_post', 'auto_featured_image');
// Used for new posts
add_action('save_post', 'auto_featured_image');
add_action('draft_to_publish', 'auto_featured_image');
add_action('new_to_publish', 'auto_featured_image');
add_action('pending_to_publish', 'auto_featured_image');
add_action('future_to_publish', 'auto_featured_image');

I have tested this code in WordPress 5.2.2