You could hook into the publish_post
action, check if a featured image has been set, and if not, assign the image you want as the featured image.
The publish_post Codex page has a nice example about changing a post after it has been published.
You could hook into the publish_post
action, check if a featured image has been set, and if not, assign the image you want as the featured image.
The publish_post Codex page has a nice example about changing a post after it has been published.