Function For Defining Default Post Thumbnail In WordPress

Open your theme’s function.php file and add the given function editing the thumbnail image URL (given in bold text) with your own image URL.

add_action( ‘save_post’, ‘wptuts_save_thumbnail’ );
function wptuts_save_thumbnail( $post_id ) {
$post_thumbnail = get_post_meta( $post_id, $key = ‘_thumbnail_id’, $single = true );
if ( !wp_is_post_revision( $post_id ) ) {
if ( empty( $post_thumbnail ) ) {
update_post_meta( $post_id, $meta_key = ‘_thumbnail_id’, $meta_value = ‘https://sangkrit.net/thumbnail.jpg’ );
}
}
}

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.