WordPress – Check if featured image is true

This PHP code will check if the featured image on post or page contains an image and will display as image url on your theme template

It works on a loop, single and page php template

<img src="'.(has_post_thumbnail( $post->ID ) ? ''.wp_get_attachment_url( get_post_thumbnail_id($post->ID) ).'' : 'replace this to a image url path').'">