wordpress - display thubmnail in sidebar recent posts

sidebar.php

    <?php
/**
 * http://officetricks.com/display-recent-posts-with-thumbnails-without-plugins/
 * Display Recent Posts with Thumbnails without Plugins – WordPress
 */
    $recent_posts = wp_get_recent_posts();
foreach( $recent_posts as $recent ){
    if($recent['post_status']=="publish"){
 if ( has_post_thumbnail($recent["ID"])) {
 echo '<li style="padding:5px;border-bottom:1px solid goldenrod;">
 <a href="' . get_permalink($recent["ID"]) . '" title="Look '.esc_attr($recent["post_title"]).'" >' .   get_the_post_thumbnail($recent["ID"], 'thumbnail'). $recent["post_title"].'</a></li> ';
 }else{
 echo '<li style="padding:5px;border-bottom:1px solid goldenrod;">
 <a href="' . get_permalink($recent["ID"]) . '" title="Look '.esc_attr($recent["post_title"]).'" >' .   $recent["post_title"].'</a></li> ';
 }
     }
}
?>