Automatically Set the Featured Image

Snippets by IsItWP

Sometimes you don’t have a featured image for a post and you want the first image of your article to be used as the featured image automatically.

Instructions: Add the following code to the functions.php file of your WordPress theme to automatically set the featured image for your posts. If you add a featured image to a post, then it will override this code and display your featured image instead.

function autoset_featured() {
    global $post;
    $already_has_thumb = has_post_thumbnail($post->ID);
        if (!$already_has_thumb)  {
        $attached_image = get_children( "post_parent=$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);
add_action('the_post', 'autoset_featured');
add_action('save_post', 'autoset_featured');
add_action('draft_to_publish', 'autoset_featured');
add_action('new_to_publish', 'autoset_featured');
add_action('pending_to_publish', 'autoset_featured');
add_action('future_to_publish', 'autoset_featured');

You may also enjoy removing featured image meta box.

Comments  Leave a Reply

  1. Hi,
    it works perfectly for wordpress posts but not with custom posttypes.
    Do you have any idea to make it work on any custom posttype?

    All the best

  2. Hello

    I tried this code on Elegantthemes Extra theme and it is not working !

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